Addition Strategies
What is 6 + 6 ?
What is 12 - 5?
12 - 5 = 7
Ray baked 11 pies. His family ate 2 pies. How many pies does Ray have left?
11 - 2 = 9
True or False:
5 + 2 = 4 + 3
True
(Both sides equal 7)
Find the missing number:
7 + __ = 10
7 + 3 = 10
Solve using a double:7 + 8 = ?
7 + 7 +1 = 15
Use addition to solve:
13 - 6 = __?
Sophia picked up 7 leaves, gave away 3, and then found 5 more. How many leaves does she have now?
7 - 3 = 4
4 + 5 = 9
True or False:
10 = 6 + 5
False
(6 + 5 = 11, not 10)
Find the missing number:
10 - __ = 4
10 - 6 = 4
Solve by making 10:
8 + 5 =
8 + 2 + 3 = 13
What is 15 - 9?
15 - 9 = 6
There were some birds on a wire. 6 more birds landed, and now there are 14 birds. How many birds were on the wire to start?
14 - 6 = 8
or
6 + 8 = 14
True or False:
8 + 4 = 12 - 0
True
(Both sides equal 12)
Solve for the blank:
10 - 4 = __ + 2
10 - 4 = 4 + 2
Add the three numbers fast:
9 + 4 + 1 = ?
9 + 4 + 1 = 14
If you know that 8 + 7 = 15, what is 15 - 7?
15 - 7 = 8
Liam has 8 red cars and some blue cars. He has 15 cars in total. How many blue cars does Liam have?
15 - 8 = 7
or
8 + 7 = 15
True or False:
8 + 2 + 4 = 12 -2
False:
8 + 2 + 4 = 14
12 - 2 = 10 the operations don't work
What number makes this true?
__ + 6 = 18
12 + 6 = 18
What Doubles helps you solve 6 + 7 = ?
6 + 6 + 1 = 13
Solve 19 - 12 = ?
19 - 12 = 7
Maya found 5 books on Monday, 8 books on Tuesday, and lost 6 books on Wednesday. How many books does she have in all?
5 + 8 = 13
13 - 6 = 7
True or False:
11 - 4 + 6 = 4 + 3 + 6
True
There are 8 oak trees and 6 poplar trees currently in the park. Park workers will plant 9 more oak trees today. How many oak trees will the park have when the workers are finished ?
8 + 9 + 17