Adding and Subtracting by 10s

80 + 10

90 - 10

22 + 10

55 - 10

60 + 10

10 + 10 =

• 5

• 100

• 20

• 10

20 + 10 =

• 30

• 60

• 50

• 20

Fill in the missing number in the pattern: 55, 45, 35, ______, 15.

• 30

• 25

• 20

Fill in the missing number in the pattern: 10, 20, 30, ______, 50.

• 35

• 40

• 45

10 more than 175 is