Odd or Even
Add them up
Subtract them down
ESTIMATE by Rounding
Multiply
100

Digits that are odd ___, ___, ___, ___, ____

1, 3, 5, 7, 9

100

    27

+ 38

______

      27

+   38

______

      65

100

   100

-    47

_____

   100

-    47

_____

     53

100

Round these to the nearest tens place, then add them.

23 and 51

20 + 50 = 70

100

3 x 3 =

3 x 5 = 

9 and 15

200

Digits that are even ___, ___, ___, ___, ___

0, 2, 4, 6, 8

200
     61

+  19

_____

     61 

+  19

______

     80

200

    100 

-    63

_____

    100

-    63

______

     37

200

Round these to the nearest tens place and then subtract them

88 and 22

90-20 = 70

200

5 x 3 = 

5 x 5 =

15 and 25

300

Odd x Even = ________

give an example equations ____ x ____ = _____

Odd x Even = EVEN number

          3  x    4    =  12

       Odd x Even = Even

300
     43

+  39

_____

    43

+ 39

_____

    82

300

    100

-    72

______

   100

-    72

_____

     28

300

Round these to the nearest tens place and then add them

14, 36, 41

10 + 40 + 40 = 90

300

7 x 5 =

7 x 6 =

35 and 42

400

Even x Even = ______

give an example equation ____ x ____ = ______

Even x Even = EVEN number 

         2    x     2.     =  4

    even    x    even  = even

400
    88

+ 36

____

    88

+ 36

____

124

400
    200

-   105

_____

   200

- 105

_____

     95

400

Round these to the nearest hundreds place and then add them

125 and 270

100 + 300 = 400

400

8 x 5 =

8 x 6 =

40 and 48

500

Odd x Odd = ______

give an example equations ____ x ____ = ____

Odd x Odd = ODD number

      3    x    5     =    15

    odd   x   odd = odd

500

     99

+  99

______

    99

+ 99

_____

   198

500
    500

-   175

______

    500

-   175

______

     325

500

Round these to the nearest hundreds place and then subtract them

221 and 195

200 - 200 = 0

500

9 x 6 = 

9 x 7 =

54 and 63

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