All the solutions provided in McGraw Hill Math Grade 2 Answer Key PDF Chapter 6 Lesson 2 Add Hundreds will give you a clear idea of the concepts.

Explore and Explain Teacher Directions: Model using base-ten blocks. The doctor in my town saw 200 patients last month. This month he has seen 100 patients. How many patients has the doctor seen in all? Write the addition sentence.

The total number of patients has the doctor seen in all is 300 patients.

Explanation:
Given that the doctor in my town saw 200 patients last month and in this month he has seen 100 patients. So the total number of patients has the doctor seen in all is 200 + 100 which is 300 patients. See and Show

Find 300 + 400 You know that 3 + 4 = 7, so 300 + 400 = 700.

Question 1.
600 +100 = _____
600 + 100 = 700.

Explanation:
As we know that 6+1 = 7, so 600+100 = 700. Question 2.
300 + 300 = _____
300 + 300 = 600.

Explanation:
As we know that 3+3 = 6, so 300+300 = 600. Question 3.
200 + 300 = _____
200 + 300 = 500.

Explanation:
As we know that 2+3 = 5, so 200+300 = 500. Question 4.
700 + 200 = ___
700 + 200 = 900.

Explanation:
As we know that 7+2 = 9, so 700+200 = 900. Question 5.
400 + 200 = ____
400 + 200 = 600.

Explanation:
As we know that 4+2 = 6, so 400+200 = 600. Question 6.
800 + 100 = ____
800 + 100 = 900.

Explanation:
As we know that 8+1 = 9, so 800+100 = 900. Question 7. 200 + 100 = 300.

Explanation:
As we know that 2+1 = 3, so 200+100 = 300. Question 8. 100 + 300 = 400.

Explanation:
As we know that 1+3 = 4, so 100+300 = 400. Question 9. 500 + 200 = 700.

Explanation:
As we know that 5+2 = 7, so 500+200 = 700. Talk Math

600 + 100 = 700.

Explanation:
The addition fact that for 600 + 100 which is 700 will be 100 + 600 which is 700.

On My Own

Question 10.
200 + 300 = ____
200 + 300 = 500.

Explanation:
As we know that 2+3 = 5, so 200+300 = 500. Question 11.
400 + 400 = ____
400 + 400 = 800.

Explanation:
As we know that 4+4 = 8, so 400+400 = 800. Question 12.
700 + 100 = ___
700 + 100 = 800.

Explanation:
As we know that 7+1 = 8, so 700+100 = 800. Question 13.
600 + 300 = ____
600 + 300 = 900.

Explanation:
As we know that 6+3 = 9, so 600+300 = 900. Question 14.
400 + 200 = ____
400 + 200 = 600.

Explanation:
As we know that 4+2 = 6, so 400+200 = 600. Question 15.
100 + 100 = _____
100 + 100 = 200.

Explanation:
As we know that 1+1 = 2, so 100+100 = 200. Question 16. 300 + 400 = 700.

Explanation:
As we know that 3+4 = 7, so 300+400 = 700. Question 17. 100 + 800 = 900.

Explanation:
As we know that 1+8 = 9, so 100+800 = 900. Question 18. 200 + 600 = 800.

Explanation:
As we know that 2+6 = 8, so 200+600 = 800. Question 19. 500 + 300 = 800.

Explanation:
As we know that 5+3 = 8, so 500+300 = 800. Question 20. 200 + 700 = 900.

Explanation:
As we know that 2+7 = 9, so 200+700 = 900. Question 21. 400 + 300 = 700.

Explanation:
As we know that 4+3 = 7, so 400+300 = 700. Question 22. 600 + 200 = 800.

Explanation:
As we know that 6+2 = 8, so 600+200 = 800. Question 23. 300 + 100 = 400.

Explanation:
As we know that 3+1 = 4, so 300+100 = 400. Question 24. 900 + 0 = 900.

Explanation:
Given that the equation is 900+0 which is 900.

Question 25. 700 + 100 = 800.

Explanation:
As we know that 7+1 = 8, so 700+100 = 800.  Problem Solving

Question 26.
Ava counts 100 cars in a parking lot. She counts 200 cars in another parking lot. How many cars did Ava count in all?
____ cars The total number Ava counts in all is 300 cars.

Explanation:
Given that Ava counts 100 cars in a parking lot and she counts 200 cars in another parking lot. The total number Ava counts in all is 200+100 which is 2+1 = 3. So the total count will be 300 cars.

Question 27.
A baker bakes 400 bagels on Saturday. He bakes 200 bagels on Sunday. How many bagels does he bake on those two days? _____ bagels
The total number of bagels he bake on those two days is 600 bagels.

Explanation:
Given that a baker bakes 400 bagels on Saturday and he bakes 200 bagels on Sunday. The total number of bagels he baked on those two days is 400 + 200 which is 4+2 = 6. So the total number of bagels is 600 bagels.

Question 28.
Jan delivers 300 newspapers on Friday. She delivers 400 newspapers on Sunday. How many newspapers did she deliver in all? _____ newspapers
The total number of newspapers did she deliver in all is 700 newspapers.

Explanation:
Given that Jan delivers 300 newspapers on Friday and she delivers 400 newspapers on Sunday. The total newspapers did she deliver in all is 300+400 which is 3+4 = 700 newspapers.

HOT Problem Pam has collected 100 pull-tabs for charity. Jake has 100 of them and Pat has 200. How many do they have altogether? Tell how knowing addition facts can help you solve this problem. Solve.
_________________________________
_________________________________
_________________________________
_________________________________

They have altogether 400.

Explanation:
Given that Pam has collected 100 pull-tabs for charity, Jake has 100, and Pat has 200. So they have altogether 100+100+200 which is 1+1+2 =4. So the total altogether is 400.

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

Practice

Question 1.
200 + 300 = _____
200 + 300 = 500

Explanation:
As we know that 2+3 = 5, so 200+300 = 500. Question 2.
500 + 300 = ___
500 + 300 = 800.

Explanation:
As we know that 5+3 = 8, so 500+300 = 800. Question 3.
100 + 100 = ____
100 + 100 = 200.

Explanation:
As we know that 1+1 = 2, so 100+100 = 200. Question 4.
600 + 100 = ___
600 + 100 = 700.

Explanation:
As we know that 6+1 = 7, so 600+100 = 700. Question 5. 700 + 200 = 900.

Explanation:
As we know that 7+2 = 9, so 700+200 = 900. Question 6. 800 + 100 = 900.

Explanation:
As we know that 8+1 = 9, so 800+100 = 900. Question 7. 400 + 400 = 800.

Explanation:
As we know that 4+4 = 8, so 400+400 = 800. Question 8. 100 + 200 = 300.

Explanation:
As we know that 1+2 = 3, so 100 + 200 = 300. Question 9. 500 + 100 = 600.

Explanation:
As we know that 5+1 = 6, so 500 + 100 = 600. Question 10. 200 + 400 = 600.

Explanation:
As we know that 2+4 = 6, so 200 + 400 = 600. Question 11. 100 + 700 = 800.

Explanation:
As we know that 1+7 = 8, so 100 + 700 = 800. Question 12. 100 + 400 = 500.

Explanation:
As we know that 1+4 = 5, so 100 + 400 = 500. Question 13. 300 + 300 = 600.

Explanation:
As we know that 3+3 = 6, so 300+300 = 600. Question 14. 700 + 200 = 900.

Explanation:
As we know that 7+2 = 9, so 700+200 = 900. Question 15. 500 + 400 = 900.

Explanation:
As we know that 5+4 = 9, so 500+400 = 900. Question 16. 200 + 600 = 800.

Explanation:
As we know that 2+6 = 8, so 200+600 = 800. Question 17.
Zoe counts 300 seeds in her pumpkin. Michael counts 500 seeds in his pumpkin. How many seeds do they count in all?
____ seeds They count in all is 800 pumpkin seeds.

Explanation:
Given that Zoe counts 300 seeds in her pumpkin and Michael counts 500 seeds in his pumpkin. So they count in all is 300 + 500 which is 3+5 = 8. So there are 800 pumpkin seeds in all.

Test Practice

Question 18.
Find the sum.
600 + 300 = ____
(A) 900
(B) 300
(C) 9
(D) 3
A.

Explanation:
As we know that 6+3 = 9, so 600+300 = 900.

Math at Home Ask your child how knowing 4 + 5 = 9 helps him or her find 400 + 500.