Practice questions available in **McGraw Hill Math Grade 2 Answer Key PDF Chapter 8 Lesson 10 Adding and Subtracting Using a Number Line **will engage students and is a great way of informal assessment.

## McGraw-Hill Math Grade 2 Answer Key Chapter 8 Lesson 10 Adding and Subtracting Using a Number Line

**Solve**

**Use the number line to solve.**

Question 1.

The roll of paper had 20 feet of paper. Ron used 3 feet for an art project. How many feet are left?

___________ feet

Answer:

17 feet

Explanation:

The roll of paper had 20 feet of paper

Ron used 3 feet for an art project

Subtract to find

20 – 3 = 17

So, 17 feet of paper roll is left.

Question 2.

Jess painted a wall that is 12 feet wide. Dean painted a wall that is 10 feet wide. How much more wider was the wall Jess painted?

_____________ feet wider

Answer:

2 feet wider

Explanation:

Jess painted a wall that is 12 feet wide

Dean painted a wall that is 10 feet wide

Subtract to find the answer

12 – 10 = 2

So, the wall Jess painted is 2 feet more wider.