Subtraction and Base Ten

Use your favorite strategy to find the difference of the following problem. 54-31

• 85
• 25
• 32
• 23

What subtraction problem do these base ten blocks represent?

• 65 - 23 = 42
• 65 - 32 = 33
• 65 - 24 = 41
• 66 - 23 = 43

What is the related subtraction fact?
58 + 19 = 77

• 58 - 19 = 77
• 19 - 77 = 58
• 77 - 58 = 19
• 58 - 77 =19

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

• 44
• 36
• 106
• 46

What is the related addition fact?
83 - 54 = 29

• 83 + 54 = 29
• 29 + 83 = 54
• 29 + 54 = 83
• 83 - 29 = 54

Gavin had 56 skittles.  He ate 17 of them.  How many skittles does Gavin have left?

• Gavin has seventy-three skittles left. 
• Gavin has forty-one skittles left. 
• Gavin has forty-nine skittles left. 
• Gavin has thirty-nine skittles left. 

The answer to a subtraction problem is called the ____________.

• sum

• difference

• addend

• count back

Cooper was watching the Atlanta Hawks basketball game.  They scored 37 points in the first half. Then they scored 54 points in the second half. How many more points did the Hawks score in the second half? 

• 21
• 91
• 23
• 17 

Use your favorite strategy to find the difference of the following problem. 86 - 61

• 52
• 25
• 147
• 15

What is 10 less than 54?

• 64

• 53

• 55

• 44