Add/Sub 2-Digits
Multiply by 2
Add/Sub 3-Digits
Positives and Negatives
Distributive Property
100

13 + 17 = 

30

100

2 X 2 =

4

100

142 + 108 =

250

100

-3 + 5 =

2

100

7b - b =

6b

200

85 - 29 = 

56

200

2 X 5 =

10

200

293 - 185 =

108

200

4 - 8 =

-4

200

3x + 2x =

5x

300

45 + 71 =

116

300

2 X 7 =

14

300

312 + 257 =

569

300

-5 - 6 =

-11

300

2(3x) =

6x

400

61 - 49 =

12

400

2 X 10 =

20

400

539 - 472 =

67

400

-9 + 12 =

3

400

3(4b) =

12b

500

86 + 95 =

181

500

2 X 12 =

24

500

948 + 136 =

1084

500

-5 - (-7) =

2

500

2(4a) + 3a =

11a