Subtracting

Solve this problem:
    43
-   19

• 24

• 36

• 26

• 14

Solve this problem:
   66
-  16

• 56

• 60

• 50

• 40

Solve this problem:
   89
- 25

• 64

• 74

• 84

• 94

What is the mistake?

• Did not subtract the 4 tens

• Did not take out a ten

• Did not subtract the ones

54 chicks hatched in 1st grade. Students took home 26 of the chicks. How many of the chicks were left?

• 54 - 26 = 32

• 54 + 26 = 80

• 54 - 26 = 28

• 54 + 26 = 70

Use your favorite strategy to find the difference of the following problem. 71 - 35

• 44

• 36

• 106

• 46

What is 10 less than 54?

• 64

• 53

• 55

• 44

18 - 9

• 10

• 9

• 11

• 7

16 - 8

• 8

• 12

• 10

• 9

12 - 2

• 10

• 14

• 9

• 11