All the solutions provided in McGraw Hill My Math Grade 2 Answer Key PDF Chapter 6 Add Three-Digit Numbers will give you a clear idea of the concepts.

Essential Question?
How can I add three-digit numbers
A three-digit number can be added by placing it in a column according to the place value and then we will add the numbers.

Question 1. 9+8 = 17.

Explanation:
The addition of 9 and 8 is 17. Question 2. 8 + 5 = 13.

Explanation:
The addition of 8 and 5 is 13. Question 3. 40 + 30 = 70.

Explanation:
The addition of 40 and 30 is 70.

Question 4. 56 + 28 = 84.

Explanation:
The addition of 56 and 28 is 84. Question 5. 8 + 8 = 16.

Explanation:
The addition of 8 and 8 is 16. Question 6. 14 + 5 = 19.

Explanation:
The addition of 14 and 5 is 19. Question 7. 60 + 30 = 90.

Explanation:
The addition of 60 and 30 is 90. Question 8. 83 + 12 = 95.

Explanation:
The addition of 83 and 12 is 95. Question 9. 27 + 18 = 45.

Explanation:
The addition of 27 and 18 is 45. Question 10.
Destiny eats 21 peanuts on Friday. She eats 29 peanuts on Saturday. How many peanuts did she eat in all? ______ peanuts
Destiny eats 50 peanuts.

Explanation:
Given that Destiny eats 21 peanuts on Friday and she eats 29 peanuts on Saturday. So the number of peanuts did she eat in all is 21+29 which is 50 peanuts. My Math Words

Review Vocabulary

ones regroup sum tens

Use the review words to tell what the example shows about the word problem. Explanation:
Here, regrouping of addition has been done for the word problem. By adding 9 and 6, we will get 15 and 1 is carried forward to the next digit. So the addition of 29 and 16 is 45. My Vocabulary Cards  Directions:

Ideas for Use

• Have students use the blank cards to write words from previous chapters that they would like to review.
• Ask students to use the blank cards to write their own vocabulary cards.  My Foldables  