medium Set 1 Form Exercise
01
7 - 1 = ___
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6

02
7 - 4 = ___
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3

03
13 - 2 = ___
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11

04
19 - 4 = ___
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15

05
6 - 4 = ___
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2

06
7 - 6 = ___
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1

07
5 - 4 = ___
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1

08
15 - 1 = ___
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14

09
12 - 2 = ___
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10

10
2 - 1 = ___
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1

11
15 - 5 = ___
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10

12
14 - 11 = ___
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3

13
12 - 2 = ___
Show answer

10

14
15 - 4 = ___
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11

15
5 - 1 = ___
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4

16
9 - 1 = ___
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8

17
7 - 2 = ___
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5

18
2 - 1 = ___
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1

19
19 - 18 = ___
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1

20
9 - 1 = ___
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8