Adding Subtracting Multiples of Ten

39 + 30

• 69

• 30

• 39

40 - 20

• 20

• 60

• 42

10, 20, and 50 are all multiples of ________

Round 46 to the nearest ten.

• 50

• 40

• 973

• 30

Round these numbers to the nearest ten and then add.

13 + 78=

• 91

• 2,123

• 100

• 80

Round these numbers to the nearest ten and then add

17 + 65

• 90

• 82

• 12

• 33

_____ + 93= 567

• 741

• 22

• 243

• 1

70 - 50 =

• 120

• 45

• 10

• 20

70 - 40 =

• 40

• 30

• 50

• 10

13 + 10

• 23

• 43

• 44

• 20