All the solutions provided in **McGraw Hill My Math Grade 2 Answer Key PDF Chapter 3 Add Two-Digit Numbers** will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 2 Answer Key Chapter 3 Add Two-Digit Numbers

**Essential Question?**

How can I add two-digit numbers?

Answer:

**Write each number two ways.**

Question 1.

18 ones = _____

____ ten ____ ones

Answer:

18 ones = 18

1 ten 8 ones

Explanation:

18 ones can also written as 1 tens and 8 ones

Question 2.

26 ones = _____

____ tens ____ ones

Answer:

26 ones = 26

2 tens 6 ones

Explanation:

26 ones can also written as 2 tens and 6 ones

**Add.**

Question 3.

Answer:

Explanation:

The sum of 2 and 7 is 9

2 + 7 = 9

Question 4.

Answer:

Explanation:

The sum of 3 and 4 is 7

3 + 4 = 7

Question 5.

Answer:

Explanation:

The sum of 2 and 2 is 4

2 + 2 = 4

Question 6.

Answer:

Explanation:

The sum of 9 and 6 is 15

9 + 6 = 15

Question 7.

3 + 3 + 1 = ____

Answer:

3 + 3 + 1 = 7

Explanation:

The sum of 3 and 3 is 6

6 and 1 is 7

3 + 3 = 6

6 + 1 = 7

Question 8.

4 + 2 + 3 = ____

Answer:

4 + 2 + 3 = 9

Explanation:

The sum of 4 and 2 is 6

6 and 3 is 9

4 + 2 = 6

6 + 3= 9

Question 9.

Jack has 5 red marbles. Trent has 3 blue marbles. Lien has 2 green marbles. How many marbles do they have altogether?

______ marbles

Answer:

10 marbles

Explanation:

Jack has 5 red marbles.

Trent has 3 blue marbles.

Lien has 2 green marbles.

5 + 3 + 2 = 10

**My Math Words**

**Review Vocabulary**

addends sum add

**Use the review words to complete the graphic organizer.**

Write a word problem about the addition sentence above.

__________________________

__________________________

__________________________

__________________________

Explanation:

3 + 4 = 7

is the addition sentence.

The sum of 3 and 4 is 7.

**My Vocabulary Cards**

**Directions:**

**Ideas for Use**

- Have students write a tally mark on the card each time they read the word in this chapter.
- Ask students to use the blank cards to write their own vocabulary cards.

**My Foldable**

Foldables Follow the steps on the back to make your Foldable.

Explanation:

**Foldables**

**Study Organizer**