Excel in your academics by accessing **McGraw Hill Math Grade 3 Answer Key PDF Chapter 9 Test **existing for free of cost.

## McGraw-Hill Math Grade 3 Chapter 9 Test Answer Key

**Look at the clock. Write the time using numbers or words.**

Question 1.

__________ : ___________

Answer: 12:17

Explanation:

The shorthand is on 12 and the minute hand is on 17. So, the time is 12:17

In words Twelve Seventeen.

Question 2.

Answer:

5:55 in words is Five Fifty-Five or Five minutes to Six.

Question 3.

__________ : ___________

Answer: 10:20

The hour hand is on 10 and the minute hand is on 4. So, the time is 10:20.

In words Ten Twenty

**Write how much time has passed**

Question 4.

start 10:00

end 1:15

Answer:

1:15 can be written in the 24-hour format as 13:15

To find how much time has passed we have to subtract 10 from 1:15

13 hour 15 mins

-10 hour 00 min

3 hour 15 mins

Thus the answer is 3 hours 15 mins.

Question 5.

start 6:40

end 3:00

Answer:

3:00 can be written as 15:00

15 hour 00 mins

-6 hour 40 mins

8 hour 20 mins

Thus the answer is 8 hours 20 mins.

Question 6.

start 4:30

end 7:20

Answer:

7 hour 20 mins

-4 hour 30 mins

2 hour 50 mins

Thus the answer is 2 hours 50 mins.

Question 7.

Cameron finishes his chores at 1:30. He spent 5 minutes watering houseplants, 30 minutes raking leaves, and 5 minutes making his bed. When did he start his chores? Use the number line and work backward to help you solve.

Answer:

Cameron finishes his chores at 1:30.

He spent 5 minutes watering houseplants, 30 minutes raking leaves, and 5 minutes making his bed.

5 + 30 + 5 = 40 minutes

We have to draw the number line backward.

Subtract 40 minutes from 1:30

1 hour 30 minutes – 40 minutes = 12:50

Thus Cameron starts his chores at 12:50.

**Place a check mark beside the better estimate for the amount each can hold.**

Question 8.

___________ 3 L

___________ 5 mL

Answer:

The spoon is small so it can hold 5 mL.

So, the estimated answer is 5mL.

Question 9.

___________ 30 L

___________ 300 mL

Answer:

The cup can hold 300 mL

So, the estimated answer is 300 mL

Question 10.

___________ 100 mL

___________ 3 L

Answer:

The container can hold 3 Liters.

So, the estimated answer is 3 L

Question 11.

___________ 180 L

___________ 180 mL

Answer:

The glass can hold 180 mL.

So, the estimated answer is 180 mL.

**Place a check mark beside the better estimate of each object’s mass.**

Question 12.

___________ 3 g

___________ 3 kg

Answer: 3 g

The estimated mass of the given object is 3 grams.

Question 13.

___________ 100 kg

___________ 300 g

Answer:

The estimated mass of the given object is 100 kg.

Question 14.

___________ 170 g

___________ 2 kg

Answer:

The estimated mass of the given object is 170 grams.

Question 15.

___________ 4 g

___________ 4 kg

Answer:

The estimated mass of the given object is 4 kg.

Question 16.

Find a heavy book or a container of laundry soap. Estimate how much the book or the laundry soap container weighs in pounds. If possible, check your estimate using a scale. Write the number of pounds.

Estimate: _______ lb

Measurement: ________ lb

Answer:

The estimated weight of the laundry soap is about 3 lbs.

The measurement of the laundry soap is 3.5 lbs.

**Place a check mark beside the better estimate of each object’s weight.**

Question 17.

___________ 900 lb

___________ 900 oz

Answer:

The better estimate of the given object cow is 900 lbs.

Question 18.

___________ 4 lb

___________ 7 oz

Answer:

The better estimate of the given object 7 ounces.

Question 19.

___________ 35 lb

___________ 70 oz

Answer:

The better estimate of the given object dog is 35 lbs.

Question 20.

___________ 10 lb

___________ 10 oz

Answer:

The better estimate of the given object 10 oz.

**Choose the correct operation and solve the word problem.**

Question 21.

Mr. Hunter waters several large plants using this watering can. Each plant needs the amount of water in I full can. How many plants did Mr. Hunter water if he used 14 liters of water in all?

Answer:

Given,

Mr. Hunter waters several large plants using this watering can.

Each plant needs the amount of water in I full can.

The capacity of the can is 2 liters

To find:

How many plants did Mr. Hunter water if he used 14 liters of water in all?

14 ÷ 2 = 7

Thus Mr. Hunter waters 7 plants with 14 liters of water.