# Into Math Grade 4 Module 2 Answer Key Addition and Subtraction of Whole Numbers

We included HMH Into Math Grade 4 Answer Key PDF Module 2 Addition and Subtraction of Whole Numbers to make students experts in learning maths.

## HMH Into Math Grade 4 Module 2 Answer Key Addition and Subtraction of Whole Numbers

How can you reason in reverse?

• A filmmaker wants to record scenes on the roofs of three buildings. She uses a drone with a camera.
• Suppose the drone starts on the roof of one building, flies down to the roof of a second building, and then flies up to land on a third building, as shown.

• How tall is the first building? __________
The Height of the third building is 692 feet
The second is to third increases by 129 feet
so, 692 – 129 = 563 feet
From first to second it decreases by 183
so, 563 + 183 = 746
The first building height is 746 feet.

Turn and Talk

• How does the relationship between addition and subtraction help you solve this problem?
Explanation:
Addition and subtraction are the inverse operations of each other.
Put simply, this means that they are the opposite.
You can undo an addition through subtraction, and you can undo a subtraction through addition.

Complete these problems to review prior concepts and skills you will need for this module.

Circle two addends to add first. Then find the sum.

Question 1.

Explanation:
6 + 4 = 10
10 + 2 = 12

Question 2.

Explanation:
5 + 5 = 10
10 + 4 = 14

Question 3.

Explanation:
8 + 2 = 10
7 + 3 = 10
10 + 10 = 20

Two-Digit Addition and Subtraction

Find the sum or difference.

Question 4.

Explanation:
The sum of two digit numbers
16 + 35 = 51

Question 5.

Explanation:
The difference of two digit numbers
84 – 56 = 28

Question 6.

Explanation:
The sum of two digit numbers
67 – 29 = 38

Subtract Through 3-Digit Numbers

Find the difference.

Question 7.

Explanation:
The difference of 591 – 7 = 584

Question 8.

Explanation:
The difference of 805 – 26 = 779

Question 9.

Explanation:
The difference of 200 – 46 = 154

Question 10.
Selena had 806 marbles in a jar. She gave Taryn 109 marbles from the jar. How many marbles does Selena have left in the jar?