Practice questions available in **McGraw Hill Math Grade 2 Answer Key PDF Chapter 8 Test **will engage students and is a great way of informal assessment.

## McGraw-Hill Math Grade 2 Chapter 8 Test Answer Key

**Measure the length of each object.**

Question 1.

___________ inches

Answer:

Explanation:

I measured the note using an inch ruler

It is 1 inch long.

Question 2.

___________ centimeters

Answer:

Explanation:

I measured the pen suing a ruler

It is 6 centimeters long.

Question 3.

___________ centimeters

Answer:

Explanation:

I measured the paper clip using a ruler

It is 3 centimeters long.

Question 4.

Cara measures the length of her bed. It is 72 inches long. It is 6 feet long. Why are there more inches than feet? Explain.

Answer:

Inches is a shorter measurement than feet

1 feet = 12 inches

So, there are more inches than feet.

**Estimate the length of the object. Then measure the length.**

Question 5.

Estimate: about ___________ inches

Measure: ___________ inches

Answer:

Explanation:

Estimate: about 4 inches

Measure: 2 inches

I estimated and measured the length of the pen

The pen is 3 inches long.

**Write an equation to help solve the problem.**

Question 6.

Greta has 20 inches of string. She uses some string on a craft project. Now she has 12 inches of string left. How much string did Greta use for her project?

Answer:

20 – 12 = 8

8 inches

Explanation:

Greta has 20 inches of string

She uses some string on a craft project

Now she has 12 inches of string left

Subtract 12 from 20 to find the answer

So, 20 – 12 = 8

Therefore, Greta used 8 inches of the string.

Question 7.

A ladybug flies 22 meters. It stops and rests. Then it flies 21 more meters. How far does the ladybug fly?

Answer:

22 + 21 = 43

43 meters

Explanation:

A ladybug flies 22 meters

It stops and rests

Then it flies 21 more meters

Add to find the answer

So, 22 + 21 = 43

Therefore, the ladybug flies 43 meters.

**Use a number line to solve each problem.**

Question 8.

Lisa’s puppy was 12 inches tall. Put a red dot on the number line to show how tall Lisa’s puppy was. The puppy grew 3 inches. Use the number line to count on. How tall is Lisa’s puppy now?

___________ inches

Answer:

Explanation:

Lisa’s puppy was 12 inches tall

I kept a red dot on the number line to show how tall Lisa’s puppy was

The puppy grew 3 inches

I started at 12

I counted on 3 more using the number line

I reached at 15

So, Lisa’s puppy is now 15 inches long.

Question 9.

Mr. Martin rode his bike 11 miles on Monday. Put a blue dot on how far he rode. On Tuesday he rode 8 miles. Put a green dot on how far he rode. How many fewer miles did he ride on Tuesday? Count back on the number line.

_____________ miles

Answer:

Explanation:

Mr. Martin rode his bike 11 miles on Monday

I kept a blue dot on how far he rode

On Tuesday he rode 8 miles

I kept a green dot on how far he rode

I started at 11

I counted backward 3 using the number line

I reached at 8

So, Mr. Martin rode 3 miles fewer on Tuesday.