Place Value
Count By 2's
Count By 10's
2-Digit Addition
2-Digit Subtraction
100
What number is in the one's place in the number 53? 
3
100
If counting by 2's, what number comes after 12?
14
100
If counting by 10's, what number comes after 20?
30
100
12+26

   12

+26

  ___

   38

100
54-12
  54

 -12

_____

   42

200

What number (value) is in the ten's place in the number 17?

1 ten--10
200
If counting by 2's, what number comes before 8?
6
200
If counting by 10's, what is 2 numbers after 30?
50
200
50+14
  50

 +14

 ____

  64

200
97-16
   97

 -16

_____

   81

300
How many tens are in the number 88?
8 tens--80
300
If counting by 2's, what number comes before 15? 
13
300
Count by 10's from 10 to 100.
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
300
77+3
  77

 +3

____

80

300
15-3
  15

 -  3

_____

   12

400
What number would you write if you had 3 tens and 4 ones?
34
400
If you were counting 2, 4, 6, 8... would you be counting by even or odd 2's?
Even 
400
If counting by 10's, what number comes before 70?
60?
400
21+47
  21

+47

_____

 68

400
96-72
   96

 -72

______

   24

500
What number would you write if you had 2 ones and 9 tens? 
92
500
If counting by 2's, what 3 numbers come after 10?
12, 14, 16
500
If counting by 10's, what 3 numbers come after 80?
90, 100, 110
500
8+92
   8

+92

_____

100

500
100-55
  95

-  55

_______

    40

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