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## McGraw-Hill Math Grade 3 Answer Key Chapter 2 Lesson 4 Finding a Missing Addend

**Solve**

**Subtract. Write the difference. Then write the missing addend in the box.**

Question 1.

14 + = 17

Question 2.

+ 3 = 5

Answer:

2 + 3 = 5

Explanation:

The difference of 5 and 3 is 2

So, the missing number is 2.

Question 3.

13 + = 18

Answer:

13 + 5 = 18

Explanation:

The difference of 18 and 13 is 5

So, the missing number is 5.

Question 4.

7 + = 8

Answer:

7 + 1 = 8

Explanation:

The difference of 8 and 7 is 1

So, the missing number is 1.

Question 5.

10 + = 14

Answer:

10 + 4 = 14

Explanation:

The difference of 14 and 10 is 4

So, the missing number is 4.

Question 6.

+ 3 = 9

Answer:

6 + 3 = 9

Explanation:

The difference of 9 and 3 is 6

So, the missing number is 6.

Question 7.

Read the problem. Write the addition sentence you would use to help find the missing addend.

Uma and John planted 8 seeds. Uma planted 3 of the seeds. How many seeds did John plant?

Answer:

3 + 5 = 8

Explanation:

Uma and John planted 8 seeds

Uma planted 3 of the seeds

The difference of 8 and 3 is 5

So, John planted 5 seeds.