Add/Subtract within 20
12 - 7 =
5
10 + 10 =
20
Jean has 10 fish. She gets 4 more fish. How many fish does she have now?
14 fish
42 + 31 =
73
56 + 20 =
76 - 20 =
76
56
13 + 4 =
17
50 + 40 =
John bakes 18 blueberry muffins and 12 banana muffins for the bake sale. How many muffins does he bake?
30 muffins
23 + 12 =
35
48 + 50 =
98 - 50 =
98
48
5 + 7 =
12
30 - 20 =
10
It takes 10 hops to hop across the park. How many hops does it take to hop there and back?
20 hops
38 + 35 =
73
28 + 60 =
88 - 60 =
88
28
18 - 9 =
9
60 - 40 =
20
Courtney buys 2 bags of apples. Each bag has 20 apples. How many apples does she buy?
40 apples
91 - 30 =
61
25 + 70 =
95 - 70 =
95
25
20 - 18 =
2
120 - 40 =
80
There are 73 bees in a hive. 10 bees fly away. Then 10 more bees fly into the hive. How many bees are in the hive now?
73 bees
63 - 22 =
41
73 + 10 =
83 - 10 =
83
73