Addition/ Subtraction
Find 10 + 2
What doubles fact helps you find 2 + 3
2 + 2
Kim sees 17 dogs. 7 of the dogs are big. How many dogs are small?
17 - 7 = 10
There ae 7 balls in the gym closet. Then 3 balls are taken out. After class, 9 balls are put back into the closet. How many balls are in the closet now?
7 - 3 = 4
4 + 9 = 13
13 balls
Find 15 - 5
10
7 + 7
Ed has 4 black crayons and 9 green crayons. How many more green crayons are there?
9 - 4 = 5
A box holds 12 markers. Nan takes out 6. Then she puts 2 back. How many makers are there now?
12 - 6 = 6
6 + 2 = 8
8 markers
Find 12 - 4
8
What doubles fact helps you find 9 + 10
9 + 9
Troy has 8 points in a game. Then he gets more points. Now he has 12 points. How many more points did he score?
8 + ? = 12
12 - 8 = 4
Lisa buys 17 apples. She eats 5 apples. She gives 9 apples to her friends. How many apples does she have now?
17 - 5 = 12
12 - 9 = 3
6 apples
Find 13 + 7
20
What doubles fact helps you find 6 + 5
5 + 5
There are 16 cartons of milk and 6 straws. How many fewer straws are there?
16 - 6 = 10
Val has 11 bunnies. She sells 5 bunnies. Then some more bunnies were born. Now she has 18. How many bunnies were born?
11 - 5 = 6
6 + ? = 18
12 bunnies
Find 8 + 9
17
What doubles fact helps you find 9 + 8
8 + 8
Jake buys 15 balloons. There are 4 red balloons. The rest are yellow. How many balloons are yellow?
15 - 4 = 11
Will has 8 stickers. He gives 2 to Sara. Then he puts some on his lunch bag. He has 4 stickers left. How many stickers does he put on his lunch bag?
8 - 2 = 6
6 - ? = 4
2 stickers