All the solutions provided in McGraw Hill My Math Grade 2 Answer Key PDF Chapter 6 Lesson 7 Rewrite Three-Digit Addition will give you a clear idea of the concepts.

Explore and Explain _______________ firefighters and police officers
Teacher Directions: There are 143 firefighters and 167 police officers in my town. How many firefighters and police officers are in my town in all? Write the number in the place-value chart and add.
The total number of firefighters and police officers in the town in all is 310.

Explanation:
Given that there are 143 firefighters and 167 police officers in my town. So the total number of firefighters and police officers in the town in all is 143+167 which is 310. See and Show

You can rewrite a problem to add.
Find 366 + 264.
Step 1:
Write one addend below the other addend. Line up the ones, tens, and hundreds.
Step 2: Question 1.
634 + 125 634 + 125 = 759.

Explanation:
By adding 634 and 125 we will get 634+125 which is 759. Question 2.
245 + 236 245 + 236 = 481.

Explanation:
By adding 245 and 236 we will get 245 + 236 which is 481. Question 3.
743 + 163 743 + 163 = 906.

Explanation:
By adding 743 and 163 we will get 743 + 163 which is 906. Question 4.
264 + 566 264 + 566 = 830.

Explanation:
By adding 264 and 566 we will get 264 + 566 which is 830. Question 5.
396 + 378 396 + 378 = 774.

Explanation:
By adding 396 and 378 we will get 396 + 378 which is 774. Question 6.
237 + 592 237 + 592 = 829.

Explanation:
By adding 237 and 592 we will get 237 + 592 which is 829. Talk Math How is rewriting three-digit addition different than rewriting two-digit addition?

On My Own

Question 7.
363 + 278 363 + 278 = 641.

Explanation:
By adding 363 and 278 we will get 363 + 278 which is 641. Question 8.
236 + 265 236 + 265 = 501.

Explanation:
By adding 236 and 265 we will get 236 + 265 which is 501. Question 9.
298 + 516 298 + 516 = 814.

Explanation:
By adding 298 and 516 we will get 298 + 516 which is 814. Question 10.
373 + 495 373 + 495 = 868.

Explanation:
By adding 373 and 495 we will get 373 + 495 which is 868. Question 11.
195 + 645 195 + 645 = 840.

Explanation:
By adding 195 and 645 we will get 195 + 645 which is 840. Question 12.
165 + 454 165 + 454 = 619.

Explanation:
By adding 165 and 454 we will get 165 + 454 which is 619. Question 13.
652 + 258 652 + 258 = 910.

Explanation:
By adding 652 and 258 we will get 652 + 258 which is 910. Question 14.
268 + 195 268 + 195 = 463.

Explanation:
By adding 268 and 195 we will get 268 + 195 which is 463. Question 15.
496 + 349 496 + 349 = 845.

Explanation:
By adding 496 and 349 we will get 496+349 which is 845. Problem Solving

Question 16.
395 ants crawled around the ant hill. 111 more ants came over to the ant hill. How many ants are there now?
____________ ants
506 ants.

Explanation:
Given that 395 ants crawled around the ant hill and 111 more ants came over to the ant hill. So the total number of ants is 395+111 which is 506 ants.

Question 17.
There are 153 yellow houses and 168 blue houses in the neighborhood. How many yellow and blue houses are there in all? ______________ yellow and blue houses
321 yellow and blue houses

Explanation:
Given that there are 153 yellow houses and 168 blue houses in the neighborhood. So the total houses altogether are 153+168 which is 321 houses.

Question 18.
Last week, Amelia sold 193 cups of lemonade. This week, she sold 129 cups. How many cups of lemonade has she sold in both weeks?
____________ cups
322 cups.

Explanation:
Given that Amelia sold 193 cups of lemonade and this week, she sold 129 cups. So the number of cups of lemonade she sold in both weeks is 193+129 is 322 cups.

Write Math Explain how you rewrite three-digit addition problems to solve.
We will rewrite three digit addition problem by adding ones place of each number together, then we will add tens place together and then hundreds place together.

### McGraw Hill My Math Grade 2 Chapter 6 Lesson 7 My Homework Answer Key

Practice

Question 1.
654 + 286 654 + 286 = 940.

Explanation:
By adding 654 and 286 we will get 654 + 286 which is 940. Question 2.
518 + 229 518 + 229 = 747

Explanation:
By adding 518 and 229 we will get 518 + 229 which is 747. Question 3.
846 + 119 846 + 119 = 965.

Explanation:
By adding 846 and 119 we will get 846 + 119 which is 965. Question 4.
556 + 148 556 + 148 = 704.

Explanation:
By adding 556 and 148 we will get 556 + 148 which is 704. Question 5.
685 + 295 685 + 295 = 980.

Explanation:
By adding 685 and 295 we will get 685 + 295 which is 980. Question 6.
584 + 371 584+371 = 955.

Explanation:
By adding 584 and 371 we will get 584+371 which is 955. Question 7.
172 + 217 172 + 217 = 389.

Explanation:
By adding 172 and 217 we will get 172 + 217 which is 389. Question 8.
362 + 264 362 + 264 = 626.

Explanation:
By adding 362 and 264 we will get 362 + 264 which is 626. Question 9.
239 + 375 239 + 375 = 614.

Explanation:
By adding 239 and 375 we will get 239 + 375 which is 614. Question 10.
There are 129 boats in the lake. There are 197 jet skis in the lake. How many boats and jet skis are in the lake? _____________ boats and jet skis
326 boats and jet skis.

Explanation:
Given that there are 129 boats in the lake and there are 197 jet skis in the lake. So the number of boats and jet skis on the lake is 129+197 which is 326 boats and jet skis.

Test Practice

Question 11.
Mark the answer that shows how to rewrite and solve the number sentence.
427 + 228 = _____________ 427+228 = 655.

Explanation:
By adding 427 and 228 we will get 427+228 which is 655. Math at Home Write 374 + 185 on a piece of paper. Have your child rewrite the problem and solve it. 