Missing Numbers
Adding Decades
Tens and Ones
10

Fill in the missing numbers.

10 __ __ __ 14 15

11 12 13

10
10+10=____

20

10

10+3=___

13
20

Fill in the missing numbers.

21 22 ___ ___ ___

23 24 25

20

20+10=___


30

20

10+____=19

9

30

Fill in the missing numbers.

___ ___ ___ 38 39

35 36 37

30

30+10=___

40

30

10+____=15

5

40

Fill in the missing numbers.

___ 55 56 ___ ___

54 57 58

40

60+10=____

70

40

What number is in the 10s place in...

97

9

50

Fill in the missing numbers.

79 ___ ___ ___ 83 84

80 81 82

50

80+20=____

100

50

What number is in the 1s place in...

63

3