Subtraction and Base Ten

What is the mistake?

• Did not subtract the 4 tens

• Did not take out a ten

• Did not subtract the ones

What subtraction problem do these base ten blocks represent?

• 65 - 23 = 42

• 65 - 32 = 33

• 65 - 24 = 41

• 66 - 23 = 43

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

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 subtraction problem is shown using the number line?

• 70 - 15 = 65

• 70 - 15 = 55

• 70 - 51 = 19

• 70 - 5 = 65

What is 10 less than 54?

• 64

• 53

• 55

• 44

When subtracting, where can I get more ones?

• Disney World

• the bank

• Mrs. Bannister

• the tens place