All the solutions provided in McGraw Hill My Math Grade 2 Answer Key PDF Chapter 3 Review will give you a clear idea of the concepts.

Vocabulary Check

Draw lines to match.  Explanation:
The result of addition is called sum
When the ones place is more than 9
Then we have to regroup.

Concept Check

Take apart an addend to solve.

Question 4.  Explanation:
The place of addends may change but the sum will not change

Question 5.  Explanation:
The place of addends may change but the sum will not change

Question 6.  Explanation:
Ones Place Value
4 + 7 = 11
Put the 1 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 3 + 2 = 6
Put the 6 in Tens place

Question 7.  Explanation:
Ones Place Value
3 + 8 = 11
Put the 1 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 4 + 2 = 7
Put the 7 in Tens place

Question 8.  Explanation:
Ones Place Value
5 + 7 = 12
Put the 2 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 1 + 3 = 5
Put the 5 in Tens place

Question 9.  Explanation:
Ones Place Value
1 + 8 = 9
Put the 9 in Ones place
Tens Place Value
1 + 1 = 2
Put the 2 in Tens place

Question 10.  Explanation:
Ones Place Value
5 + 3 = 8
Put the 8 in Ones place
Tens Place Value
1 + 7 = 8
Put the 8 in Tens place

Question 11.  Explanation:
Ones Place Value
8 + 3 = 11
Put the 1 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 2 + 6 = 9
Put the 9 in Tens place

Question 12.  Explanation:
Ones Place Value
6 + 6 = 12
Put the 2 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 3 + 3 = 7
Put the 7 in Tens place

Question 13.  Explanation:
Ones Place Value
6 + 5 = 11
Put the 1 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 2 + 4 = 7
Put the 7 in Tens place

Question 14.  Explanation:
Ones Place Value
2 + 6 = 8
Put the 8 in Ones place
Tens Place Value
3 + 1 = 4
Put the 4 in Tens place

Question 15.  Explanation:
Ones Place Value
3 + 7 + 0 = 10
Put the 0 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 2 + 1 + 3 = 7
Put the 7 in Tens place

Question 16.  Explanation:
Ones Place Value
2 + 2 + 0 = 4
Put the 4 in Ones place
Tens Place Value
5 + 2 + 2 = 9
Put the 9 in Tens place
Question 17.  Explanation :
Ones Place Value
6 + 2 + 4 = 12
Put the 2 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 1 + 1 + 2 = 5
Put the 5 in Tens place

Question 18.  Explanation:
Ones Place Value
6 + 5 + 4 + 1 = 16
Put the 6 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 1 + 2 + 4 + 1 = 9
Put the 9 in Tens place

Question 19.  Explanation:
Ones Place Value
7 + 7 + 3 + 0 = 17
Put the 7 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 5 + 1 + 1 + 1 = 9
Put the 9 in Tens place

Question 20.  Explanation:
Ones Place Value
1 + 3 + 3 + 6 = 13
Put the 3 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 2 + 1 + 1 + 1 = 6
Put the 6 in Tens place

Problem Solving

Question 21.
Kaylee sold 35 raffle tickets. Chloe sold 27 and Noah sold 33. How many raffle tickets did they sell in all?
____ tickets
95 tickets
Explanation: Ones Place Value
5 + 7 + 3 = 15
Put the 5 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 3 + 2 + 3 = 9
Put the 9 in Tens place

Question 22.
Peyton has 13 marbles. She finds 11 more marbles. How many marbles does Peyton have in all?
____ marbles Explanation: Ones Place Value
3 + 1 = 4
Put the 4 in Ones place
Tens Place Value
1 + 1 = 2
Put the 2 in Tens place

Question 23.
Dylan ate 18 grapes. Evan ate 12 grapes. Layla ate 14 grapes. Hailey ate 13 grapes. How many grapes were eaten?
____ grapes
57 grapes
Explanation: Ones Place Value
8 + 2 + 4 + 3 = 17
Put the 7 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 1 + 1 + 1 + 1 = 5
Put the 5 in Tens place

Test Practice

Question 24.
The red team has 20 boys, the blue team has 19 boys, the green team has 19 boys, and the yellow team has 20 boys. How many boys are there in all?
(A) 80
(B) 78
(C) 59
(D) 58
B
Explanation: Ones Place Value
0 + 9 + 9 + 0 = 18
Put the 8 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 2 + 1 + 1 + 2 = 7
Put the 7 in Tens place

Reflect

Show the ways you can add to solve problems.

Add the ones. Regroup if needed. Explanation: Add the ones. Regroup if needed. Add the tens. Explanation: Essential Question?
How can I add two-digit numbers?

Add the ones. Regroup if needed. Add the tens. Explanation: Add the ones. Regroup if needed. Add the tens. Explanation: Scroll to Top