This handy Math in Focus Grade 3 Workbook Answer Key Cumulative Review Chapters 13 to 15 provides detailed solutions for the textbook questions.

## Math in Focus Grade 3 Cumulative Review Chapters 13 to 15 Answer Key

**Concepts and Skills**

Jessica is surveying and graphing her friends’ favorite foods.

**Use the data in the tally chart to complete the bar graph. Then answer the question. (Lesson 13.1)**

Question 1.

Answer:

Question 2.

How many friends did Jessica survey? ___________

Answer:

6 + 12 + 15 + 18 = 51

Jessica surveyed 51 friends Favorite food.

**Complete. (Lesson 14.1)**

Question 3.

The fraction shaded is ___________.

Answer:

The fraction shaded is **5/8**.

Explanation:

In the above image we can observe 5 parts are shaded out of 8 parts. The shaded fraction is 5/8.

Question 4.

The numerator of the fraction is ___________.

Answer:

The numerator of the fraction is** 5**.

Question 5.

The denominator of the fraction is ___________.

Answer:

The denominator of the fraction is **8**.

**Write the missing numerator or denominator. (Lesson 14.2)**

Question 6.

Answer:

Explanation:

In the above image we can observe the fraction 3/4. Multiply numerator and denominator with 3 the fraction is 9/12. The missing numerator is 9.

Question 7.

Answer:

Explanation:

The fraction 6/8 is equal to 3/4. The missing denominator is 4.

Question 8.

Answer:

Explanation:

Multiply the numerator and denominator with 2. So, the fractions are 1/5 = 2/10 = 4/20. The missing numerators are 1, 4. The missing denominator is 10.

Question 9.

Answer:

Explanation:

In the above image we can observe some fractions. The fraction 12/16 is equal to 6/8 and 3/4. So, the missing numerators are 12, 6, 3. The missing denominator is 8.

**Complete. Express each fraction in simplest form. (Lesson 14.3)**

Question 10.

\(\frac{6}{10}\) = ___________

Answer:

**6/10 = 3/5**

Explanation:

The simplest form of the fraction 6/10 is 3/5.

Question 11.

\(\frac{8}{12}\) = _____________

Answer:

**8/12 = 2/3**

Explanation:

The simplest form of the fraction 8/12 is 2/3.

**Circle the fraction that is greater. (Lesson 14.4)**

Question 12.

\(\frac{5}{6}\) or \(\frac{2}{3}\)

Answer:

Explanation:

The fraction 5/6 is greater than 2/3. So, draw a circle for 5/6.

Question 13.

\(\frac{2}{5}\) or \(\frac{5}{8}\)

Answer:

Explanation:

The fraction 5/8 is greater than 2/5. So, draw a circle for 5/8.

**Circle the fraction that is less. (Lesson 14.4)**

Question 14.

\(\frac{5}{7}\) or \(\frac{5}{9}\)

Answer:

Explanation:

The fraction 5/9 is less than 5/7. So, draw a circle for 5/9.

Question 15.

\(\frac{4}{9}\) or \(\frac{5}{7}\)

Answer:

Explanation:

The fraction 4/9 is less than 5/7. So, draw a circle for 4/9.

**Compare. Write > or <. (Lesson 14.4)**

Question 16.

Answer:

Explanation:

The fraction 4/5 is greater than 3/8.

Question 17.

Answer:

Explanation:

The fraction 3/7 is less than 7/12.

**Order the fractions from least to greatest. (Lesson 14.4)**

Question 18.

\(\frac{1}{2}\), \(\frac{3}{8}\), \(\frac{7}{12}\) _____________

Answer:

The fractions from least to greatest are **3/8, 1/2, 7/12**.

**Order the fractions from greatest to least.**

Question 19.

\(\frac{1}{6}\), \(\frac{3}{4}\), \(\frac{2}{3}\) ______________

Answer:

The fractions from greatest to least are **3/4, 2/3, 1/6**.

**Complete. Show each fraction on the number line. (Lesson 14.4)**

Question 20.

A fraction greater than \(\frac{1}{2}\) but less than \(\frac{3}{4}\). ___________

Answer:

1/2 + 1/12 = 7/12

A fraction greater than 1/2 but less than 3/4 is 7/12.

Question 21.

A fraction less than \(\frac{1}{6}\) ___________.

Answer:

A fraction less than1/6 is 1/7.

Question 22.

A fraction greater than \(\frac{5}{6}\) _____________

Answer:

**Add or subtract. (Lesson 14.5)**

Question 23.

\(\frac{1}{12}+\frac{5}{12}\) = ____________

Answer:

1/12 + 5/12 = 6/12 = **1/2**

Question 24.

\(\frac{2}{6}+\frac{1}{6}+\frac{3}{6}\) = _____________

Answer:

2/6 + 1/6 + 3/6 = **6/6 = 1**

Question 25.

\(\frac{5}{10}-\frac{4}{10}\) = ____________

Answer:

5/10 – 4/10 = **1/10**

Question 26.

1 – \(\frac{5}{12}\) = ____________

Answer:

1 – 5/12 = (12 – 5)/12 = **7/12**

**Complete. Measure Line segment A to the nearest: (Lesson 15.1)**

Question 27.

inch. _________

Answer:

Question 28.

half-inch. ____________

Answer:

**Color the pictures to find the fractional part of each set. (Lesson 14.6)**

Question 29.

\(\frac{1}{2}\) of 10

Answer:

Explanation:

1/2 of 10 = 5

Shaded 5 stars with out of 10.

Question 30.

\(\frac{3}{8}\) of 16

Answer:

Explanation:

3/8 of 16 = 6

Shaded 6 heart shape symbols out of 16.

**Color the pictures to find the fractional part of each set. (Lesson 14.6)**

Question 31.

\(\frac{1}{4}\) of 20

Answer:

Explanation:

1/4 of 20 = 5

In the above image we can observe 5 circles are shaded out of 20.

Question 32.

\(\frac{5}{6}\) of 24

Answer:

Explanation:

5/6 of 24 = 20

In the above image we can observe 20 circles are shaded out of 24.

**Write a fraction for the part of each set that is shaded. (Lesson 14.6)**

Question 33.

Answer:

In the above image we can observe 2/6 fraction part is shaded.

Question 34.

Answer:

In the above image we can observe 3/7 fraction part is shaded.

**Choose the best unit of measure for measuring each length. Write inch, foot, yard, or mile. (Lesson 15.1)**

Question 35.

width of a finger _______________

Answer:

width of a finger **inch**.

Question 36.

length of a baseball bat _______________

Answer:

length of a baseball bat **inches**.

Question 37.

length of a playground _______________

Answer:

length of a playground **foot**.

Question 38.

distance walked in 1 hour _______________

Answer:

distance walked in 1 hour **Mile**.

**Complete. (Lesson 15.2)**

Question 39.

The cherries weigh ___________ ounces.

Answer:

The cherries weigh **8** ounces.

Explanation:

In the above image we can observe the pointer is at 8oz. So, the cherries weigh **8** ounces.

Question 40.

Each loaf of bread weighs about 1 pound.

The pineapple weighs about ___________ pounds.

Answer:

The pineapple weighs about **3** pounds.

Explanation:

In the above image we can observe 3 loaf of bread in left side and pineapple in right side weighing balance. Each loaf of bread weighs about 1 pound. So, the pineapple weigh about **3** pounds.

**Choose the best unit of measure for weighing each item. Write ounce, pound, or ton. (Lesson 15.2)**

Question 41.

weight of a dog ___________

Answer:

weight of a dog **pounds**.

Question 42.

weight of a box of toothpicks ___________

Answer:

weight of a box of toothpicks** pound**.

Question 43.

weight of a hippopotamus ___________

Answer:

weight of a hippopotamus **tons**.

**Compare. Write > or <. (Lesson 15.2)**

Question 44.

Answer:

Explanation:

1lb = 16oz

1 pound = 16ounce

So, 8lb is greater than 1oz.

Question 45.

Answer:

**Complete. (Lesson 15.3)**

Question 46.

The pitcher is completely filled with water. The water is emptied into cups.

The capacity of the pitcher is about ___________ cups.

Answer:

Question 47.

5 pints of water are poured to fill a container.

The capacity of the container is about ___________ pints.

Answer:

The capacity of the container is about **5** pints.

**Circle the better estimate. (Lesson 15.3)**

Question 48.

The capacity of a car’s fuel tank is 20 gallons / 20 pints.

Answer:

The capacity of a car’s fuel tank is **8 pints**.

Explanation:

We know that

1 gallon = 4 quarts

1 quart = 2 pints

First convert gallons into quarts.

20 gallons / 20 pints = (20 x 4) quarts / 20 pints

= 80 quarts / 20 pints

Convert quarts into pints.

= (80 x 2) pints / 20 pints

= 160 pints / 20 pints

=** 8 pints**

Question 49.

The amount of yogurt eaten for lunch is 1 cup / 1 quart.

Answer:

The amount of yogurt eaten for lunch is 1/4 cups.

Explanation:

we know that

1 quart = 2 pints

1 pint = 2 cups

First convert quart into pints.

1 cup / 1 quart = 1 cup / (1 x 2) pints

= 1 cup / 2 pints

Next convert pints into cups.

1 cup / (2 x 2) cups = 1 cup / 4 cups

= **1/4 cups**

**Order from greatest capacity to least capacity. (Lesson 15.3)**

Question 50.

6 pt 14 qt 2 gal

Answer:

The order from the greatest capacity to least capacity is 14qt 2gal 6pt.

Explanation:

1 quart = 2 pints

1 gallon = 2 quarts

Convert quart into pints

14 quart = 14 x 2 pints =** 28 pints**

Convert gallons into pints

2 gallons = 2 x 4 x 2 pints = **16 pints**

**14qt > 2gal > 6pt**

Question 51.

1 gal 18 c 10 pt

Answer:

The order from the greatest capacity to least capacity is 10pt 18c 1gal.

Explanation:

1 pint = 2 cups

1 quart = 2 pints

1 gallon = 2 quarts

Convert gal into cups

1 gallon = 4 x 2 x 2 =** 16 cups**

Convert pints into cups

10 pints = 10 x 2 = **20 cups**

**10pt > 18C > 1gal**

**Problem Solving**

Miguel conducted a survey to find the number of hours that some students spend playing their favorite sport each week.

He recorded the data in a table.

Show the data in a line plot. Give your line plot a title.

Question 52.

Answer:

**Answer each question. Use the data in your line plot.**

Question 53.

How many students spend more than 5 hours on their favorite sport? ___________

Answer:

Question 54.

How many hours did most students spend on their favorite sport? ___________ hours

Answer:

Question 55.

The number of students who spent 6 hours on their favorite sport is ___________ times the number of students who spent 7 hours.

Answer:

Question 56.

There are ___________ fewer students who spent 5 hours on their favorite sport than those who spent 8 hours.

Answer:

Question 57.

If a total of 1 5 students were surveyed, how many students do not spend any time on sports? ___________

Answer:

**The bar graph shows the number of points scored by four basketball players.**

**Use the bar graph to answer the questions.**

Question 58.

How many points did Edwin score?

Answer:

Edwin scored **60** points.

Question 59.

Edwin scored 20 more points than Rachel. How many points did Rachel score?

Answer:

Edwin scored 20 more points than Rachel. So, Rachel scored **40 points**.

Question 60.

Use your answer from Exercise 59 to complete the bar graph for Rachel.

Answer:

Question 61.

Edwin scored three times as many points as one of the players. Who is this player?

Answer:

Edwin scored 60 points.

Irene scored 20 points.

20 x 3 = 60 points

Edwin scored three times as many points than **Irene**.

Question 62.

Who scored the least number of points?

Answer:

**Joanna** scored the least number of points. Joanna scored 15 points.