NSO.2.3

45 + 27 =______

• 18

• 22

• 62

• 72

Find the sum of 58 and 16.

• 20

• 42

• 64

• 74

Find the sum.

46 + 32

• 75

• 76

• 77

• 78

Which has a sum of 67? Choose all that apply. 

• 15 + 52

• 15 + 62

• 59 + 8

• 11 + 55

Which has a sum of 48? Choose all that apply. 

• 15 + 23

• 19 + 29

• 39 + 9

• 11 + 36

Which has a sum of 48? Choose all that apply. 

• 15 + 23

• 19 + 29

• 39 + 9

• 11 + 36

Which shows a way to break apart the second addend to find the sum of 65 + 24?

• 65 + 20 = 85

• 65 + 20 + 4 = 89

• 65 + 2 + 4 = 71

• 60 + 5 + 4 = 69

Which is the sum of 42 + 28?

• 71

• 70

• 68

• 60

Jen solved a subtraction problem using the open number line shown. Write the equation that her work below shows.

• 56 - 20 = 34

• 56 - 10 = 36

• 56 - 22 = 34

Find the difference.

82 - 27=

• 55

• 45

• 65

• 69