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Fractions on a number line

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5401063
Use the number line. What fraction names the location of point \(M\)? Explain how the equal tick-spaces determine the numerator and denominator.
Figure for problem 540106

Hints

- Count the equal spaces between \(0\) and \(1\) on the displayed line. - Count how many of those spaces lie between \(0\) and \(M\). - Connect the total-space count and the spaces-to-\(M\) count to the two parts of a fraction.

Solution

1. The interval from \(0\) to \(1\) is divided into \(4\) equal tick-spaces, so each space is one fourth. 2. Point \(M\) is \(3\) tick-spaces from \(0\), so the numerator is \(3\). 3. Therefore, point \(M\) is at \(\frac{3}{4}\).

Answer

Point \(M\) is at \(\frac{3}{4}\). There are \(4\) equal spaces in the whole interval and \(M\) is \(3\) of those spaces from \(0\).
5401553
The interval from \(0\) to \(1\) is divided into \(6\) equal spaces. Point \(A\) is at the end of the fifth space from \(0\). What fraction names the location of point \(A\)?

Hints

- Count the equal spaces from \(0\) to \(1\). - Count the spaces from \(0\) to point \(A\). - Use the total number of spaces as the denominator.

Solution

1. The unit interval has \(6\) equal spaces, so the denominator is \(6\). 2. Point \(A\) is \(5\) spaces from \(0\), so it is at \(\frac{5}{6}\).

Answer

Point \(A\) is at \(\frac{5}{6}\).
5317273
What fractions are marked by points \(A\), \(B\), \(C\), and \(D\) on the number line? Write each value in eighths.
Figure for problem 531727

Hints

- Count the equal intervals from \(0\) to \(1\) to determine the fraction size of one step. - Count equal eighth-steps from \(0\) to each labeled point. - Keep each answer in eighths so it matches the partition shown on the number line.

Solution

1. The interval from \(0\) to \(1\) is divided into \(8\) equal parts, so each step is \(\frac{1}{8}\). 2. Point \(A\) is \(3\) eighth-steps from \(0\), so \(A=\frac{3}{8}\). 3. Point \(B\) is \(6\) eighth-steps from \(0\), so \(B=\frac{6}{8}\). 4. Point \(C\) is \(9\) eighth-steps from \(0\), so \(C=\frac{9}{8}\). 5. Point \(D\) is \(14\) eighth-steps from \(0\), so \(D=\frac{14}{8}\).

Answer

A) \(\frac{3}{8}\) B) \(\frac{6}{8}\) C) \(\frac{9}{8}\) D) \(\frac{14}{8}\)
5317323
Points \(P\), \(Q\), and \(R\) are marked on the number line. a) Into how many equal parts is the interval from \(0\) to \(1\) divided? What fraction does one step represent? b) What values are marked by \(P\), \(Q\), and \(R\)? Write each value in eighths.
Figure for problem 531732

Hints

- Count the equal intervals from \(0\) to \(1\). - Use that interval count to name the size of one step. - Count eighth-steps from \(0\) to each labeled point and keep the answers in eighths.

Solution

1. The interval from \(0\) to \(1\) is divided into \(8\) equal parts, so one step represents \(\frac{1}{8}\). 2. Point \(P\) is \(2\) eighth-steps from \(0\), so \(P=\frac{2}{8}\). 3. Point \(Q\) is \(7\) eighth-steps from \(0\), so \(Q=\frac{7}{8}\). 4. Point \(R\) is \(11\) eighth-steps from \(0\), so \(R=\frac{11}{8}\).

Answer

a) \(8\) equal parts; one step is \(\frac{1}{8}\) b) \(P=\frac{2}{8}\), \(Q=\frac{7}{8}\), \(R=\frac{11}{8}\)
5353193
What fractions are marked by \(U\), \(V\), and \(W\) on the number line? Write each in simplest form.
Figure for problem 535319

Hints

- Count the equal intervals from \(0\) to \(\frac{2}{3}\). - Rewrite \(\frac{2}{3}\) as an equivalent fraction whose numerator matches that interval count. - Count equal fraction steps from \(0\) to each marker and simplify.

Solution

1. There are \(4\) equal intervals from \(0\) to \(\frac{2}{3}\). 2. Rewrite \(\frac{2}{3}\) as \(\frac{4}{6}\). Therefore, each interval represents \(\frac{1}{6}\). 3. Thus, \(U=\frac{1}{6}\), \(V=\frac{2}{6}=\frac{1}{3}\), and \(W=\frac{3}{6}=\frac{1}{2}\).

Answer

\(U=\frac{1}{6}\), \(V=\frac{1}{3}\), \(W=\frac{1}{2}\)
5401233
A frog starts at \(0\). The segment below the number line shows how far it has jumped. Each jump is exactly one tick-space. a) How many jumps has the frog made? b) What fraction names its landing point? c) How many more same-size jumps are needed to reach \(1\)?
Figure for problem 540123

Hints

- Count the equal tick-spaces across the whole interval from \(0\) to \(1\). - Count how many of those spaces the displayed segment crosses. - After locating the landing point, count the remaining equal spaces to \(1\).

Solution

1. The interval from \(0\) to \(1\) has \(6\) equal tick-spaces, so each jump is one sixth. 2. The displayed segment crosses \(4\) tick-spaces, so the frog has made \(4\) jumps and lands at \(\frac{4}{6}\). 3. There are \(2\) tick-spaces from that landing point to \(1\), so \(2\) more same-size jumps are needed.

Answer

a) \(4\) jumps b) \(\frac{4}{6}\) c) \(2\) more jumps
5401273
Use the number line. How many equal tick-spaces long is the segment below the line? Write its length as a fraction of the interval from \(0\) to \(1\).
Figure for problem 540127

Hints

- Count all equal spaces between \(0\) and \(1\) to determine the unit fraction. - Count only the spaces covered by the segment. - Use the covered-space count over the total equal-space count.

Solution

1. The interval from \(0\) to \(1\) has \(8\) equal tick-spaces, so each space represents \(\frac{1}{8}\). 2. The displayed segment spans \(5\) of those equal spaces. 3. Therefore, the segment is \(5\) tick-spaces long and its length is \(\frac{5}{8}\) of the whole interval.

Answer

The segment is \(5\) equal tick-spaces long, so its length is \(\frac{5}{8}\).
5401323
The two number lines use different equal partitions from \(0\) to \(1\). On which line can the third tick after \(0\) correctly represent \(\frac{3}{4}\)? Explain.
Figure for problem 540132

Hints

- The denominator tells how many equal spaces make the interval from \(0\) to \(1\). - Compare the number of spaces shown on the two lines. - Then count to the third tick on the line whose partition matches the denominator.

Solution

1. The denominator \(4\) means the interval from \(0\) to \(1\) must be divided into \(4\) equal spaces. 2. Line a) has \(4\) equal spaces, so its third tick after \(0\) represents \(\frac{3}{4}\). 3. Line b) has \(3\) equal spaces, so its third tick after \(0\) represents \(\frac{3}{3}=1\).

Answer

Line a) can correctly show \(\frac{3}{4}\).
5401653
The interval from \(0\) to \(1\) will be divided into \(8\) equal spaces. How many interior tick marks are needed? What fraction is at the fifth tick after \(0\)?

Hints

- Eight equal spaces need boundaries between neighboring spaces. - Each space is one eighth of the unit interval. - Count \(5\) spaces from \(0\) to name the requested tick.

Solution

1. Eight equal spaces require \(7\) interior tick marks between the endpoints. 2. Each space has length \(\frac{1}{8}\). 3. The fifth tick after \(0\) is the endpoint of \(5\) eighth-size spaces. 4. That tick represents \(\frac{5}{8}\).

Answer

\(7\) interior tick marks are needed. The fifth tick after \(0\) is \(\frac{5}{8}\).
5402303
Use the number line. What fractions are at the first and second interior tick marks between \(1\) and \(2\)? Write both with denominator \(3\).
Figure for problem 540230

Hints

- Count the equal spaces between the two labeled whole numbers. - Name the size of one space as a unit fraction. - Start from one whole and count unit-fraction spaces to each interior tick.

Solution

1. The number line divides the interval from \(1\) to \(2\) into \(3\) equal spaces, so each space is \(\frac{1}{3}\). 2. One whole is \(\frac{3}{3}\), so the first interior tick is \(\frac{3}{3}+\frac{1}{3}=\frac{4}{3}\). 3. The second interior tick is \(\frac{3}{3}+\frac{2}{3}=\frac{5}{3}\).

Answer

The first interior tick is \(\frac{4}{3}\), and the second is \(\frac{5}{3}\).
5318313
The number line shows \(0\) and \(\frac{3}{4}\). Find the fractions marked by \(A\), \(B\), and \(C\). Write each value as a fraction in simplest form or as a mixed number.
Figure for problem 531831

Hints

- Count the equal intervals from \(0\) to \(\frac{3}{4}\). - Rewrite \(\frac{3}{4}\) as an equivalent fraction whose numerator matches that interval count. - Count equal fraction steps from \(0\) to each marker.

Solution

1. There are \(6\) equal intervals from \(0\) to \(\frac{3}{4}\). 2. Rewrite \(\frac{3}{4}\) as \(\frac{6}{8}\). Therefore, each of those six equal intervals represents \(\frac{1}{8}\). 3. Point \(A\) is \(3\) intervals from \(0\), so \(A=\frac{3}{8}\). 4. Point \(B\) is \(10\) intervals from \(0\), so \(B=\frac{10}{8}=\frac{5}{4}=1\frac{1}{4}\). 5. Point \(C\) is \(14\) intervals from \(0\), so \(C=\frac{14}{8}=\frac{7}{4}=1\frac{3}{4}\).

Answer

\(A=\frac{3}{8}\), \(B=\frac{5}{4}=1\frac{1}{4}\), \(C=\frac{7}{4}=1\frac{3}{4}\)
5318413
Find the fraction marked by each letter on the two number lines. For line a), write every value in eighths. For line b), write every value in sixths.
Figure for problem 531841

Hints

- Count the equal intervals from \(0\) to \(1\) on each number line. - Use the interval count to determine the fraction size of one step on each line. - Count steps from \(0\) to each letter and keep the denominator that matches its line.

Solution

1. In a), the interval from \(0\) to \(1\) is divided into eighths, so \(A=\frac{2}{8}\), \(B=\frac{5}{8}\), \(C=\frac{7}{8}\), and \(D=\frac{9}{8}\). 2. In b), the interval from \(0\) to \(1\) is divided into sixths, so \(E=\frac{2}{6}\), \(F=\frac{3}{6}\), \(G=\frac{5}{6}\), and \(H=\frac{7}{6}\).

Answer

a) \(A=\frac{2}{8}\), \(B=\frac{5}{8}\), \(C=\frac{7}{8}\), \(D=\frac{9}{8}\) b) \(E=\frac{2}{6}\), \(F=\frac{3}{6}\), \(G=\frac{5}{6}\), \(H=\frac{7}{6}\)
5351463
What fractions or mixed numbers are marked on the number lines? Give the value for each letter.
Figure for problem 535146

Hints

- Count the equal intervals between consecutive whole numbers on each line. - That count gives the denominator for one step. - Count steps to each marker and combine them with the whole number when needed.

Solution

1. In a), each step is \(\frac{1}{4}\), so \(A=1\frac{1}{4}\). 2. In b), each step is \(\frac{1}{3}\), so \(B=3\frac{2}{3}\) and \(C=4\frac{1}{3}\). 3. In c), each step is \(\frac{1}{6}\), so \(D=10\frac{5}{6}\). 4. In d), each step is \(\frac{1}{8}\), so \(E=\frac{5}{8}\).

Answer

a) \(A=1\frac{1}{4}\) b) \(B=3\frac{2}{3}\), \(C=4\frac{1}{3}\) c) \(D=10\frac{5}{6}\) d) \(E=\frac{5}{8}\)
5401203
Use the number line. Suppose a point is placed at \(\frac{1}{6}\). Would the point land on one of the tick marks already shown, or halfway between two neighboring shown ticks? Identify those neighboring ticks and explain.
Figure for problem 540120

Hints

- First count the equal spaces from \(0\) to \(1\) on the displayed line. - Use that partition to name the first interior tick. - Compare the size of \(\frac{1}{6}\) with one of those equal tick-spaces.

Solution

1. The displayed interval from \(0\) to \(1\) has \(3\) equal spaces, so the first interior tick is at \(\frac{1}{3}\). 2. One sixth is half of one third, so \(\frac{1}{6}\) lies halfway from \(0\) to \(\frac{1}{3}\). 3. Therefore, \(\frac{1}{6}\) is not on a shown tick. It lies halfway between \(0\) and the first interior tick, \(\frac{1}{3}\).

Answer

The point would not land on a shown tick. It would be halfway between \(0\) and the first interior tick, \(\frac{1}{3}\).
5401353
The gray segment shown on the number line is shifted one tick to the right without changing its length. What are the new starting and ending points?
Figure for problem 540135

Hints

- First determine the value of one tick-step on the number line. - Read the two endpoints of the gray segment from the figure. - Shift both endpoints by the same one-tick distance.

Solution

1. The interval from \(0\) to \(1\) is divided into \(3\) equal spaces, so one tick-step is \(\frac{1}{3}\). 2. The gray segment begins at \(0\) and ends at \(\frac{2}{3}\). 3. Shifting both endpoints one tick right moves the start to \(\frac{1}{3}\) and the end to \(\frac{3}{3}=1\).

Answer

The new starting point is \(\frac{1}{3}\), and the new ending point is \(1\).
5401453
A number line from \(0\) to \(1\) has \(6\) spaces, but the spaces are not equal lengths. A student labels the tick marks \(\frac{1}{6},\frac{2}{6},\ldots,\frac{6}{6}\). Explain why these labels are not valid.

Hints

- Recall what the denominator requires of the unit interval. - Compare the physical lengths of the spaces described. - Equal fraction steps must represent equal distances.

Solution

1. A sixth on a number line must be one of \(6\) equal lengths in the unit interval. 2. The given spaces have different lengths. 3. Equal increases of \(\frac{1}{6}\) cannot be shown by unequal spaces. 4. Therefore, the tick labels are not valid sixths locations.

Answer

The labels are invalid because the interval from \(0\) to \(1\) was not partitioned into \(6\) equal spaces.
5401523
On a number line, \(\frac{3}{4}\) is one fourth-size space to the left of \(1\). The point \(\frac{6}{8}\) is two eighth-size spaces to the left of \(1\). Explain why these descriptions place the fractions at the same point.
Figure for problem 540152

Hints

- Compare the length of two eighth-size spaces with one fourth-size space. - Both fractions are measured left from the same point, \(1\). - Equal distances from \(1\) land at the same point.

Solution

1. Two eighth-size spaces have the same total length as one fourth-size space. 2. Both points are therefore the same distance to the left of \(1\). 3. A single number line has only one point at that distance from \(1\). 4. Thus, \(\frac{3}{4}=\frac{6}{8}\).

Answer

Two eighths equal one fourth, so both fractions are one fourth below \(1\). Therefore, \(\frac{3}{4}=\frac{6}{8}\).
5401623
Point \(K\) and \(\frac{1}{2}\) are marked on the number line. Is \(K\) to the left or right of \(\frac{1}{2}\), and how many eighth-size spaces separate them?
Figure for problem 540162

Hints

- Read the location of \(K\) from the supplied number line. - Notice which marked point lies farther to the right. - Count the equal eighth-size spaces between the two marked locations.

Solution

1. The number line is divided into eighths, and \(K\) is at the sixth eighth-step from \(0\), or \(\frac{6}{8}\). 2. The marked point \(\frac{1}{2}\) is to the left of \(K\). 3. There are \(2\) eighth-size spaces from \(\frac{1}{2}\) to \(K\).

Answer

Point \(K\) is to the right of \(\frac{1}{2}\) by \(2\) eighth-size spaces.
5401803
Use the number line shown. What fraction of one unit is each equal space? What fraction names the location of point \(P\)?
Figure for problem 540180

Hints

- Count the equal spaces from \(0\) to \(1\) on the figure. - Use that count to name the size of one space. - Count equal spaces from \(0\) to point \(P\).

Solution

1. From \(0\) to \(1\), the number line has \(4\) equal spaces, so each space is \(\frac{1}{4}\) unit. 2. Point \(P\) is at the fifth fourth-size step from \(0\). 3. Therefore, \(P=\frac{5}{4}\).

Answer

Each space is \(\frac{1}{4}\) unit long. Point \(P\) is at \(\frac{5}{4}\).
5401823
A point moves left from the right labeled fraction to the left labeled fraction on the number line. How many fourth-size spaces does it move? Does the path cross the point \(1\)?
Figure for problem 540182

Hints

- Read the two labeled fractions from the number line. - Count the equal fourth-size spaces between those locations. - Check whether the tick for \(1\) lies between the starting and ending points.

Solution

1. The labeled endpoints are \(\frac{9}{4}\) and \(\frac{3}{4}\). 2. Counting fourth-size spaces from \(\frac{9}{4}\) left to \(\frac{3}{4}\) gives \(6\) spaces. 3. One whole is \(\frac{4}{4}\), which lies between the two endpoints. 4. Therefore, the path crosses \(1\).

Answer

The point moves \(6\) fourth-size spaces left, and the path crosses \(1\).
5401983
The number line shows Gap A and Gap B. Which gap is larger? Explain using unit-fraction sizes.
Figure for problem 540198

Hints

- Read the endpoints of each labeled gap from the number line. - Count how many equal tick-spaces make each gap. - Compare the sizes of the unit-fraction steps represented by those spaces.

Solution

1. Gap A runs from \(\frac{1}{4}\) to \(\frac{1}{2}\), so its length is one fourth-size step, or \(\frac{1}{4}\). 2. Gap B runs from \(\frac{1}{8}\) to \(\frac{1}{4}\), so its length is one eighth-size step, or \(\frac{1}{8}\). 3. A fourth-size step is larger than an eighth-size step. 4. Therefore, Gap A is larger.

Answer

Gap A is larger. It has size \(\frac{1}{4}\), while Gap B has size \(\frac{1}{8}\).
5402013
A point starts at marker \(S\) and moves \(3\) eighth-size spaces to the right. Write the final location with denominator \(8\). How far is it from \(1\)?
Figure for problem 540201

Hints

- Read the starting marker from the number line and notice the size of each equal step. - Move exactly \(3\) equal spaces to the right. - After locating the endpoint, count the remaining equal space or spaces to \(1\).

Solution

1. The number line is divided into eighths, and marker \(S\) is at \(\frac{4}{8}\). 2. Moving \(3\) eighth-size spaces right reaches \(\frac{7}{8}\). 3. From \(\frac{7}{8}\) to \(1=\frac{8}{8}\) is one eighth-size space, so the distance is \(\frac{1}{8}\).

Answer

The final location is \(\frac{7}{8}\), which is \(\frac{1}{8}\) from \(1\).
5402143
The two colored markers are endpoints of a segment on the number line. Divide that segment into \(3\) equal shorter segments. What fractions are at the two new division points?
Figure for problem 540214

Hints

- Read the two marked endpoints and count the equal spaces between them. - Share that total number of spaces equally among the \(3\) shorter segments. - Step by the resulting equal length from the left endpoint to find the two interior division points.

Solution

1. The marked endpoints are \(\frac{1}{8}\) and \(\frac{7}{8}\), which are \(6\) eighth-size spaces apart. 2. Dividing \(6\) spaces into \(3\) equal segments gives \(2\) eighth-size spaces per segment. 3. Two spaces right of \(\frac{1}{8}\) is \(\frac{3}{8}\). 4. Two more spaces right is \(\frac{5}{8}\).

Answer

The new division points are \(\frac{3}{8}\) and \(\frac{5}{8}\).
5402153
Use the number line. Name point \(X\) in sixths. Then explain why the same point can also be named with denominator \(3\).
Figure for problem 540215

Hints

- Count the small equal spaces from \(0\) to \(1\) to identify the unit fraction. - Count how many of those spaces reach point \(X\). - Think about how the small spaces can be grouped equally to name the same distance in thirds.

Solution

1. From \(0\) to \(1\), the number line has \(6\) equal spaces, so each small space is one sixth. 2. Point \(X\) is \(8\) small spaces from \(0\), so \(X=\frac{8}{6}\). 3. Two sixth-size spaces have the same length as one third-size space. Thus, \(8\) sixths make \(4\) thirds. 4. Therefore, \(X=\frac{8}{6}=\frac{4}{3}\).

Answer

\(X=\frac{8}{6}=\frac{4}{3}\). Two sixth-size spaces make one third-size space, so 8 sixths make 4 thirds. Therefore, \(\frac{8}{6}\) and \(\frac{4}{3}\) name the same point.
5402203
A point moved \(3\) sixth-size spaces to the right and landed at point \(L\), shown on the number line. Where did the point start? Write the starting fraction with denominator \(6\), and compare it with \(1\).
Figure for problem 540220

Hints

- Use the sixth-size spacing to read point \(L\)'s location with denominator \(6\). - Reverse the motion by moving the stated number of equal spaces to the left. - Compare the starting point's position with the tick for \(1\).

Solution

1. Reading the sixth-size spacing on the number line, point \(L\) is at \(\frac{8}{6}\). 2. Work backward by moving \(3\) sixth-size spaces left. 3. The starting point is \(\frac{5}{6}\). 4. Since \(\frac{5}{6}\) is one sixth-size space left of \(1\), \(\frac{5}{6}<1\).

Answer

The point started at \(\frac{5}{6}\), and \(\frac{5}{6}<1\).
5402243
Points \(A\) and \(B\) are marked on the number line. Point \(C\) is one fourth-size space to the left of \(B\). Find point \(C\). How many fourth-size spaces separate \(A\) and \(C\)?
Figure for problem 540224

Hints

- Read the locations of \(A\) and \(B\) from the number line. - Move one equal fourth-size space left from \(B\) to locate \(C\). - Count the equal spaces between \(A\) and \(C\).

Solution

1. From the number line, \(A=\frac{5}{4}\) and \(B=\frac{9}{4}\). 2. One fourth-size space left of \(\frac{9}{4}\) is \(\frac{8}{4}\), so \(C=\frac{8}{4}=2\). 3. From \(\frac{5}{4}\) to \(\frac{8}{4}\) there are \(3\) fourth-size spaces.

Answer

\(C=\frac{8}{4}=2\), and \(A\) and \(C\) are \(3\) fourth-size spaces apart.
5402283
Marker \(S\) starts at the point shown on the number line. It moves \(3\) sixth-size spaces right, then \(\frac{1}{3}\) unit left. Where does marker \(S\) finish?
Figure for problem 540228

Hints

- Read marker \(S\)'s starting location from the number line and follow the right move first. - To make the left move on this line, determine how many sixth-size spaces have the same length as \(\frac{1}{3}\) unit. - Check the final position against the labeled whole-number tick.

Solution

1. From the number line, \(S\) starts at \(\frac{5}{6}\). 2. Moving \(3\) sixth-size spaces right reaches \(\frac{8}{6}\). 3. One third of a unit has the same length as \(2\) sixth-size spaces. 4. Moving \(2\) sixth-size spaces left from \(\frac{8}{6}\) reaches \(\frac{6}{6}=1\).

Answer

Marker \(S\) finishes at \(1\).
5540443
The number line shows only \(0\) and \(1\). You want to place \(\frac{5}{6}\) correctly. Into how many equal spaces should the interval from \(0\) to \(1\) be divided, and after how many of those spaces from \(0\) should the point be placed?
Figure for problem 554044

Hints

- Think about what the denominator says about the whole interval. - After deciding the size of one step, use the numerator as a count of those steps. - Your plan should specify both the partition and the point's position.

Solution

1. The denominator \(6\) means the whole interval from \(0\) to \(1\) must be divided into \(6\) equal spaces. 2. Each space then represents \(\frac{1}{6}\). 3. The numerator \(5\) means count \(5\) of those spaces from \(0\). 4. Place the point at the fifth division point from \(0\).

Answer

Divide the interval into \(6\) equal spaces and place the point after \(5\) spaces from \(0\).
5401413
Marker \(S\) is shown on the number line. It makes \(3\) equal jumps to the right and lands at \(1\). What is the length of each jump? Where is the marker after the first and second jumps?
Figure for problem 540141

Hints

- Read the starting point and the equal tick size from the number line. - Count how many equal tick-spaces lie between \(S\) and \(1\). - Share that distance equally among the \(3\) jumps, then follow the landings in order.

Solution

1. The interval from \(0\) to \(1\) is divided into fourths, and \(S\) is at \(\frac{1}{4}\). 2. The distance from \(\frac{1}{4}\) to \(1=\frac{4}{4}\) is \(3\) fourth-size spaces. 3. Three equal jumps share those \(3\) spaces, so each jump is \(\frac{1}{4}\) unit. 4. After the first jump the marker is at \(\frac{2}{4}=\frac{1}{2}\), and after the second it is at \(\frac{3}{4}\).

Answer

Each jump is \(\frac{1}{4}\) unit. After the first jump the marker is at \(\frac{1}{2}\), and after the second it is at \(\frac{3}{4}\).
5401503
A thirds number line has point \(A\) positioned so the distance from \(0\) to \(A\) is twice the distance from \(A\) to \(1\). Where is point \(A\)?
Figure for problem 540150

Hints

- Split the three equal spaces into a two-to-one arrangement. - Decide how many spaces must lie on each side of the point. - Use the spaces from zero to name the location.

Solution

1. The unit interval has \(3\) equal third-size spaces. 2. To make the left distance twice the right distance, place \(2\) spaces on the left and \(1\) on the right. 3. Point \(A\) is \(2\) third-size spaces from \(0\), so it is at \(\frac{2}{3}\).

Answer

\(\frac{2}{3}\)
5401863
Use the number line. The longer tick marks divide the unit into fourths, and the shorter tick marks divide it into smaller equal spaces. Write the location of \(Q\) in fourths and in eighths. What fraction of one unit is each small space?
Figure for problem 540186

Hints

- Use the longer tick marks first to name \(Q\) in fourths. - Then count all of the smaller equal spaces in one whole unit. - Count how many of those smaller spaces reach from \(0\) to \(Q\).

Solution

1. Point \(Q\) is at the third fourth-size step from \(0\), so \(Q=\frac{3}{4}\). 2. There are \(6\) small equal spaces from \(0\) to \(Q\) and \(8\) such spaces in one whole unit. 3. Each small space is \(\frac{1}{8}\) of one unit, so \(Q=\frac{6}{8}\). 4. Therefore, \(\frac{3}{4}=\frac{6}{8}\).

Answer

\(Q=\frac{3}{4}=\frac{6}{8}\), and each small space is \(\frac{1}{8}\) of one unit.
5401933
Point \(A\) is marked on the number line. Point \(B\) is exactly one whole to the right of \(A\). Point \(C\) is halfway between \(A\) and \(B\). Write the locations of \(B\) and \(C\) with denominator \(8\).
Figure for problem 540193

Hints

- Read point \(A\) and the step size from the number line. - Think about how many eighth-size spaces make one whole. - Halfway from \(A\) to a point one whole away uses half of that many spaces.

Solution

1. The number line is divided into eighths, and point \(A\) is at \(\frac{3}{8}\). 2. One whole is \(\frac{8}{8}\), so \(B=\frac{3}{8}+\frac{8}{8}=\frac{11}{8}\). 3. Points \(A\) and \(B\) are \(8\) eighth-size spaces apart, so halfway is \(4\) spaces from \(A\). 4. Four spaces right of \(\frac{3}{8}\) is \(\frac{7}{8}\), so \(C=\frac{7}{8}\).

Answer

\(B=\frac{11}{8}\) and \(C=\frac{7}{8}\).
5401973
Point \(M\) is marked on the number line. Point \(L\) is \(2\) sixth-size spaces left of \(M\), and point \(R\) is \(2\) sixth-size spaces right of \(M\). Write the locations of \(L\) and \(R\) with denominator \(6\). Order \(L\), \(M\), and \(R\) from left to right.
Figure for problem 540197

Hints

- Read point \(M\)'s location and the sixth-size spacing from the number line. - Move two equal spaces left to locate \(L\) and two equal spaces right to locate \(R\). - Use the left-to-right positions to write the final order.

Solution

1. The line is partitioned in sixth-size spaces, and \(M\) is at \(\frac{9}{6}\). 2. Two sixth-size spaces left of \(M\) is \(\frac{7}{6}\), so \(L=\frac{7}{6}\). 3. Two sixth-size spaces right of \(M\) is \(\frac{11}{6}\), so \(R=\frac{11}{6}\). 4. From left to right, \(\frac{7}{6}<\frac{9}{6}<\frac{11}{6}\), so the order is \(L,M,R\).

Answer

\(L=\frac{7}{6}\) and \(R=\frac{11}{6}\). From left to right: \(L,M,R\), or \(\frac{7}{6}<\frac{9}{6}<\frac{11}{6}\).
5402183
Points \(A\) and \(B\) are marked on the number line. Point \(B\) is halfway between point \(A\) and point \(C\). Find point \(C\).
Figure for problem 540218

Hints

- Read the locations of \(A\) and \(B\) from the number line. - Count the equal spaces from \(A\) to \(B\). - Because \(B\) is halfway, repeat that same distance to the right of \(B\).

Solution

1. From the number line, \(A=\frac{1}{4}\) and \(B=\frac{3}{4}\). 2. The distance from \(A\) to \(B\) is \(2\) fourth-size spaces. 3. Because \(B\) is halfway, the distance from \(B\) to \(C\) is also \(2\) fourth-size spaces. 4. Moving \(2\) fourth-size spaces right from \(\frac{3}{4}\) reaches \(\frac{5}{4}\), so \(C=\frac{5}{4}\).

Answer

\(C=\frac{5}{4}\)
5401673
Points \(A\) and \(B\) are marked on an eighths number line. Point \(C\) lies between them. The distance from \(A\) to \(C\) is \(2\) eighth-size spaces greater than the distance from \(C\) to \(B\). Find point \(C\).
Figure for problem 540167

Hints

- Read the locations of \(A\) and \(B\) from the number line and count the spaces between them. - Split that total distance into two whole-number space counts whose difference is \(2\). - Use the longer of those two distances starting from \(A\).

Solution

1. From the number line, \(A=\frac{2}{8}\) and \(B=\frac{6}{8}\), so they are \(4\) eighth-size spaces apart. 2. The two distances total \(4\) spaces and differ by \(2\) spaces. 3. They must be \(3\) spaces from \(A\) to \(C\) and \(1\) space from \(C\) to \(B\). 4. Three eighth-size spaces right of \(\frac{2}{8}\) is \(\frac{5}{8}\), so \(C=\frac{5}{8}\).

Answer

\(C=\frac{5}{8}\)

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