Subtraction Review

 $17-3=$  

• 14

• 20

• 4

• 44

 $60-20=$  

• 70

• 80

• 20

• 40

 $37-5=$  

• 52

• 42

• 23

• 32

 $75-30=$  

• 45

• 55

• 25

• 65

 $25-12=$  

• 23

• 13

• 33

• 37

Count back by10's to fill in the missing number.

93, 83, ___, 63, 53, 43

• 23

• 3

• 73

• 83

When you subtract you find the __________.

There were 45 trees in the forest. 24 trees were cut to build a house. How many trees are still standing in the forest?

• 42

• 21

• 69

• 12

There were 34 books on the shelf. 14 books were taken off the shelf. How many books are still on the shelf?

• 48

• 30

• 20

• 28

There are 35 birds in the tree. 12 birds flew away. How many birds are left in the tree?

• 23

• 33

• 47

• 24