This handy **Spectrum Math Grade 4 Answer Key Chapter 7 Pretest** provides detailed answers for the workbook questions.

## Spectrum Math Grade 4 Chapter 7 Pretest Answers Key

**Check What You Know**

**Complete the following.**

Question 1.

a. 36 inches = ______________ yard

Answer:

1 yard

Explanation:

We know that

1 yard = 36 inches

Hence the answer is 1 yard.

b. 8 quarts = _____________ gallons

Answer:

2 gallons

Explanation:

1 gallon = 4 quart

8 quarts = 8 ÷ 4

= 2 gallons

Question 2.

a. 1 cup = _____________ ounces

Answer:

8 ounces.

Explanation:

We know,

1 cup = 8 ounces

Hence the answer is 8 ounces.

b. 1 mile = _____________ yards

Answer:

1760 yards.

Explanation:

We know

1 mile = 1760 yard

Hence the answer is 1760 yards.

Question 3.

a. 2 feet = _____________ inches

Answer:

24 inches

Explanation:

We know,

1 feet = 12 inches

2 feet = 2 × 12

= 24 inches

b. 10 cups = _____________ pints

Answer:

5 pints

Explanation:

We know,

1 pint = 2 cups

10 cups = 10 ÷ 2

= 5 pints

Question 4.

a. 3 feet = _____________ yard

Answer:

1 yard.

Explanation:

We know,

1 yard = 3 foot

The answer is 1 yard.

b. 8 pints = _____________ quarts

Answer:

4 quarts

Explanation:

We know,

1 quart = 2 pints

8 pints = 8 ÷ 2

= 4 quarts

Question 5.

a. 10 pints = _____________ cups

Answer:

20 cups.

Explanation:

We know,

1 pint = 2 cups

10 pints = 10 × 2

= 20 cups.

b. 8 cups = _____________ quarts

Answer:

2 quarts.

Explanation:

We know,

1 quart = 4 cups

8 cups = 8 ÷ 4

= 2 quarts.

**Find the area and perimeter of each shape.**

Question 6.

a.

A = ____________ square yards

P = __________ yards

Answer:

Area = 300 square yards.

Perimeter = 80 yards.

Explanation:

Given,

side of the square = 10 yd

Another side of the square = 30 yd

Area = 10 × 30

= 300 square yards

Perimeter = 10 + 30 + 10 + 30

= 80 yards.

b.

A = ___________ square inches

P = ___________ inches

Answer:

Area = 72 square inches

perimeter = 36 inches.

Explanation:

Given,

Side of the square = 12 in

Another side of the square = 6 in

Area = 12 × 6 = 72 square inches.

Perimeter = 6 + 6 + 12 + 12

= 36 inches

**Measure the angle.**

Question 7.

__________°

Answer:

43°.

Explanation:

The measure of the angle is 43°.

Question 8.

__________°

Answer:

125 °

Explanation:

The measure of the angle is 125°.

Question 9.

__________°

Answer:

79°

Explanation:

The measure of the angle is 79°.

**Solve each problem. Show your work.**

Question 10.

Paul is using a 4-quart container to fill a wash tub. If he needs 12 gallons of water to fill the tub, how many times does he need to fill the ‘4-quart container?

He needs to fill the container ___________ times.

Answer:

He needs to fill the container 48 times.

Explanation:

Given,

There are 4 quarts in a gallon.

He needs 12 gallons of water

Now 4 should be multiplied by 12 is 48.

Question 11.

A worker at the zoo measured the length of an iguana. The iguana measured 72 inches long. How many feet did the iguana measure?

The iguana measured ______________ feet.

Answer:

The iguana measured 6 feet.

Explanation:

Given,

The iguana measured 72 inches long.

1 foot = 12 inches.

72 = 72 ÷ 12

= 6 feet.

Question 12.

The feed store has a half ton of wood shavings to ship to the horse farm. How many pounds of shavings does the feed store have?

The feed store has ____________ pounds of wood shavings.

Answer:

The feed store has 1000 lbs pounds of wood shavings.

Explanation:

Given,

1 ton = 2000 lbs

half ton = 1000 lbs

The feed store has 1000 lbs pounds of wood shavings.

Question 13.

The town of Yarmouth is planning a skateboard park and needs to know the perimeter of the park. The property measures 7 yards by 3 yards by 10 yards by 5 yards. What is the perimeter?

The park’s perimeter is _____________ yards.

Answer:

The park’s perimeter is 25 yards.

Explanation:

Given,

the property measures 7 yards by 3 yards by 10 yards by 5 yards.

To get the perimeter, you get the sum of all the sides.

Therefore, the perimeter of the park here is 7+3+10+5 = 25 yards.

Question 14.

The Garda brothers are painting a wall in their living room. The wall measures 8 feet by 10 feet. What is the area of the wall?

The area of the wall is ______________ square feet.

Answer:

The area of the wall is 80 square feet.

Explanation:

Given,

The wall measures 8 feet by 10 feet.

Area = 8 × 10

= 80 square feet.

**Complete the following.**

Question 15.

a. 5 km = _____________ m

Answer:

5000 m

Explanation:

We know,

1 km = 1000 m

5 km = 5 × 1000

= 5000 m

b. 60,000 mL = ____________ L

Answer:

60 ml

Explanation:

We know,

1 litre = 1000 ml

60,000 ml = 60,000 ÷ 1000

= 60 ml

Question 16.

a. 6 m = _____________ cm

Answer:

600 cm

Explanation:

We know,

1 m = 100 cm

6 m = 6 × 100

= 600 cm

b. 32 kg = _____________ g

Answer:

32000 g

Explanation:

We know,

1 kg = 1000 g

32 kg = 32 × 1000

= 32000 g

Question 17.

a. 72 cm = _____________ mm

Answer:

Explanation:

We know,

1 cm = 10 mm

72 cm = 72 × 10

= 720 mm

b. 19 L = _____________ mL

Answer:

19000 L

Explanation:

we know,

1 L = 1000 ml

19 L = 19 × 1000

= 19000 L

Question 18.

a. 1 g = _____________ mg

Answer:

1000 mg.

Explanation:

We know,

1 gram = 1000 mg

Hence the answer is 1000 mg.

b. 100 cm = _____________ m

Answer:

1 m

Explanation:

We know,

1 m = 100 cm

100 cm = 100 ÷ 100

= 1 m

Question 19.

a. 25 kg = _____________ g

Answer:

2500 g

Explanation:

We know,

1 kg = 100 g

25 kg = 25 × 100

= 2500 g

b. 65 cm = _____________ mm

Answer:

65 mm

Explanation:

We know that,

1 cm = 10 mm

65 cm = 65 × 10

= 65 mm

Question 20.

a. 17 L = _____________ mL

Answer:

17000 ml

Explanation:

We know,

1 L = 1000 ml

17 L = 17 × 1000

= 17000 ml

b. 5,200 cm = _____________ m

Answer:

52 m

Explanation:

We know,

1 m = 100 cm

5200 cm = 5200 ÷ 100

= 52 m

Question 21.

a. 7,000 mg = _____________ g

Answer:

7 g

Explanation:

We know,

1 gram = 1000 milligram

7000 mg = 7000 ÷ 1000

= 7 g

b. 25 km = _____________ m

Answer:

25000 m

Explanation:

We know,

1 km = 1000 m

25 km = 25 × 1000

= 25000 m

Question 22.

a. 200 mm = _____________ cm

Answer:

20 cm

Explanation:

We know,

1 cm = 10 mm

200 mm = 200 ÷ 10

= 20 cm

b. 9,000 mL = _____________ L

Answer:

9 L

Explanation:

we know,

1 lit = 1000 milliliter

9000 ml = 9000 ÷ 1000

= 9 L

**Use the line plot to answer the questions.**

Question 23.

What is the difference between the longest distance run and the shortest distance run?

Answer:

1 1/4

Explanation:

Given,

the longest distance run = 10

the shortest distance run = 8 1/4

the difference between the longest distance run and the shortest distance run is

10 – 33/4 = (40 – 33) ÷ 4

= 7 ÷ 4

= 1 1/4

Question 24.

If you add all the distances together, what would be the total distance run?

Answer:

44 1/2 miles.

Explanation:

If we add all the distances together, the total distance run is 44 1/2 miles.

**Find the missing angle.**

Question 25.

Answer:

The missing angle is 72°

Explanation:

To find the missing angle we need to subtract the angle from 90°

90° – 18° = 72°

Question 26.

Answer:

The missing angle is 17°.

Explanation:

To find the missing angle we need to subtract the angle from 90°

90° – 73° = 17°

Question 27.

Answer:

The missing angle is 9°.

Explanation:

To find the missing angle we need to subtract the angle from 90°

90° – 81° = 9°

**Solve each problem. Show your work.**

Question 28.

A hiking trail is 35 kilometers long. Sarah hiked 15 kilometers so far. How many more meters does Sarah have to hike?

Sarah has to hike _____________ more meters.

Answer:

Sarah has to hike 20,000 more meters.

Explanation:

Given,

A hiking trail is 35 kilometers long.

Sarah hiked 15 kilometers so far.

35 – 15 = 20 km

Now convert them to meters.

20 × 1000 = 20, 000 more meters.

Question 29.

The ham in the store weighs 1 kilogram, the turkey weighs 2 kilograms, and the chicken weighs 1 kilogram. How many grams do all three items in the grocery store weigh?

All three items weigh ______________ grams.

Answer:

All three items weigh 1000 grams.

Explanation:

Given,

The ham in the store weighs 1 kilogram

the turkey weighs 2 kilograms

the chicken weighs 1 kilogram

Total weigh = 1 + 2 + 1 =4 kg

convert kg to grams

1 kg = 1000 grams

4 × 1000 = 4000 grams

Question 30.

Shawna needs liters of ginger ale and cola for a party, but it only comes in milliliters. If she orders 30,000 milliliters of ginger ale and 20,000 milliliters of cola, how many liters will she have?

She will have _____________ liters.

Answer:

She will have 50 liters.

Explanation:

She orders 30,000 milliliters of ginger ale.

She orders 20,000 milliliters of cola,

Total = 30,000 + 20,000

= 50,000 milliliters

Now convert them to liters

50, 000 ÷ 1000 = 50 liters

Question 31.

The science experiment requires the students to measure 52,000 milligrams of chemicals. There are only 13,000 milligrams of chemicals in the science lab. How many more milligrams of chemicals do the students need?

The students need ____________ more milligrams of chemicals.

Answer:

The students need 39,000 more milligrams of chemicals.

Explanation:

Given,

The science experiment requires the students to measure 52,000 milligrams of chemicals.

There are only 13,000 milligrams of chemicals in the science lab.

The difference between them is 52,000 – 13,000 = 39,000 more milligrams of chemicals.