Addition
Subtraction
Missing Numbers
100

10+7=

17

100

10-4=

6

100

11, 12, ___, 14

13

200

7+7=

14

200

13-9=

4

200

14, ___, 16, 17

15

300

5+9=

14

300

18-8=

10

300

17, 18, 19, ____

20

400

9+9=

18

400

15-6=

9

400

12, 14, ___, 18

16

500

17+3=

20

500

16-9=

7

500

5, 10, ___, 20

15

M
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