topic 10 and 11

23 + 5 = ___

• 72

• 28

• 73

• 29

Use the hundred chart to add. 6 + 40 =

• 40

• 10

• 46

• 36

Which equation matches the picture?

• 1 + 3 = 4

• 10 + 30 = 40

• 1 + 2 = 3

• 1 + 30 = 31

Use the blocks to add. 18 + 20 = _____

Use mental math to subtract. 26 - 10 = _____

• 16

• 46

• 36

• 6

Which equation shows the problem?

• 80 - 50 = 30

• 80 - 30 = 50

• 8 - 3 = 5

• 8 - 5 = 3

Which is the missing number? 30 + ________ = 60

• 40

• 50

• 30

• 10

Use the hundred chart to add. 47 + 30 = _______

Use mental math to solve the equation. 17 + 10 = _____

What is the missing number? 30 + 40 = 70, so 70 - 30 = ____.

• 100

• 30

• 70

• 40