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Adding
Subtracting
Properties
Substitution
Equations
100
257 +567
824
100
1,286 - 429
839
100

4+0=4

Identity 

100

If n=5, what is n+12

17

100

n+7=19

n=12

200
4,543 + 821
5,364
200
527 - 338
189
200

5 x 1 = 5

Identity

200

If n=9, what is n-3

6

200

9+n=17

n=8

300
1,321 +2,246
3,567
300
810 - 638
172
300

2+3=3+2

Commutative

300

If n=7, what is 12-n

5

300
n-2=8

n=10

400
24,593 +16,861
41,454
400
3,304 - 1,137
2,167
400

4+(5+6)=(4+5)+6

Associative
400

If n=19, what is n+n

38

400

n-4=5

n=9

500

9,348+102+5,802

15,252

500
7,006 - 3,529
3,477
500

(2+3)+7=(3+2)+7

Commutative

500

If n=100, what is n-12

88

500

15-n=6

n=9