add to 10
add to 20
subtract
subt. 10 and less
2 digit subt
100

1+5=

6

100
8 + 5 =
What is 13?
100
12 - 7 = .
What is 5?
100

7-2=

5

100

50-34=

16

200

2+4=

6

200
9 + 3 + 1 =
What is 13?
200
13 - 4 = .
What is 9?
200

4-4=

0

200

241-135=

106

300

3+4=

7

300
6 + 9 =
What is 15?
300
14 - 6 = .
What is 8?
300

5-4=

1

300

423-253=

170

400

5+2=

7

400
10 + 7 + 2 =
What is 19?
400
9 - 4 = .
What is 5?
400

6-3=

3

400

680-341=

339

500

3+5=

8

500
9 + 8 + 1 =
What is 18?
500
16 - 9 = .
What is 7?
500

7-5=

2

500

92-70=

22

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