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

Check What You Know

Complete the following.

Question 1.
a. 36 inches = ______________ yard
1 yard

Explanation:
We know that
1 yard = 36 inches
Hence the answer is 1 yard.

b. 8 quarts = _____________ gallons
2 gallons

Explanation:
1 gallon = 4 quart
8 quarts = 8 ÷ 4
= 2 gallons

Question 2.
a. 1 cup = _____________ ounces
8 ounces.

Explanation:
We know,
1 cup = 8 ounces
Hence the answer is 8 ounces.

b. 1 mile = _____________ yards
1760 yards.

Explanation:
We know
1 mile = 1760 yard
Hence the answer is 1760 yards.

Question 3.
a. 2 feet = _____________ inches
24 inches

Explanation:
We know,
1 feet = 12 inches
2 feet = 2 × 12
= 24 inches

b. 10 cups = _____________ pints
5 pints

Explanation:
We know,
1 pint = 2 cups
10 cups = 10 ÷ 2
= 5 pints

Question 4.
a. 3 feet = _____________ yard
1 yard.

Explanation:
We know,
1 yard = 3 foot

b. 8 pints = _____________ quarts
4 quarts

Explanation:
We know,
1 quart = 2 pints
8 pints = 8 ÷ 2
= 4 quarts

Question 5.
a. 10 pints = _____________ cups
20 cups.

Explanation:
We know,
1 pint = 2 cups
10 pints = 10 × 2
= 20 cups.

b. 8 cups = _____________ quarts
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
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
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. __________°
43°.

Explanation:
The measure of the angle is 43°.

Question 8. __________°
125 °

Explanation:
The measure of the angle is 125°.

Question 9. __________°
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.

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.
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.
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.
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.
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
5000 m

Explanation:
We know,
1 km = 1000 m
5 km = 5 × 1000
= 5000 m

b. 60,000 mL = ____________ L
60 ml

Explanation:
We know,
1 litre = 1000 ml
60,000 ml = 60,000 ÷ 1000
= 60 ml

Question 16.
a. 6 m = _____________ cm
600 cm

Explanation:
We know,
1 m = 100 cm
6 m = 6 × 100
= 600 cm

b. 32 kg = _____________ g
32000 g

Explanation:
We know,
1 kg = 1000 g
32 kg = 32 × 1000
= 32000 g

Question 17.
a. 72 cm = _____________ mm
Explanation:
We know,
1 cm = 10 mm
72 cm = 72 × 10
= 720 mm

b. 19 L = _____________ mL
19000 L

Explanation:
we know,
1 L = 1000 ml
19 L = 19 × 1000
= 19000 L

Question 18.
a. 1 g = _____________ mg
1000 mg.

Explanation:
We know,
1 gram = 1000 mg
Hence the answer is 1000 mg.

b. 100 cm = _____________ m
1 m

Explanation:
We know,
1 m = 100 cm
100 cm = 100 ÷ 100
= 1 m

Question 19.
a. 25 kg = _____________ g
2500 g

Explanation:
We know,
1 kg = 100 g
25 kg = 25 × 100
= 2500 g

b. 65 cm = _____________ mm
65 mm

Explanation:
We know that,
1 cm = 10 mm
65 cm = 65 × 10
= 65 mm

Question 20.
a. 17 L = _____________ mL
17000 ml

Explanation:
We know,
1 L = 1000 ml
17 L = 17 × 1000
= 17000 ml

b. 5,200 cm = _____________ m
52 m

Explanation:
We know,
1 m = 100 cm
5200 cm = 5200 ÷ 100
= 52 m

Question 21.
a. 7,000 mg = _____________ g
7 g

Explanation:
We know,
1 gram = 1000 milligram
7000 mg = 7000 ÷ 1000
= 7 g

b. 25 km = _____________ m
25000 m

Explanation:
We know,
1 km = 1000 m
25 km = 25 × 1000
= 25000 m

Question 22.
a. 200 mm = _____________ cm
20 cm

Explanation:
We know,
1 cm = 10 mm
200 mm = 200 ÷ 10
= 20 cm

b. 9,000 mL = _____________ L
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?
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?
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. The missing angle is 72°

Explanation:
To find the missing angle we need to subtract the angle from 90°
90° – 18° = 72° Question 26. The missing angle is 17°.

Explanation:
To find the missing angle we need to subtract the angle from 90°
90° – 73° = 17° Question 27. 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.
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.
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.
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.