All the solutions provided in **McGraw Hill Math Grade 1 Answer Key PDF Chapter 9 Lesson 1 Adding Digits **as per the latest syllabus guidelines.

## McGraw-Hill Math Grade 1 Answer Key Chapter 9 Lesson 1 Adding Digits

**Add**

**Write the sum.**

Question 1.

Explanation:

The sum of 12 and 4 is 16

12 + 4 = 16

Question 2.

Answer:

Explanation:

The sum of 34 and 3 is 37

34 + 3 = 37

Question 3.

Answer:

Explanation:

The sum of 21 and 2 is 23

21 + 2 = 23

Question 4.

Answer:

Explanation:

The sum of 10 and 5 is 15

10 + 5 = 15

Question 5.

Answer:

Explanation:

The sum of 42 and 6 is 48

42 + 6 = 48

Question 6.

Answer:

Explanation:

The sum of 13 and 4 is 17

13 + 4 = 17