Subtract from 20

Subtraction of two numbers with minuend up to 20

4

-

3


3

-

2


9

-

6


12

-

1


7

-

2


20

-

9


15

-

6


10

-

6


18

-

16


6

-

3


13

-

11


4

-

1


17

-

15


15

-

6


2

-

1


13

-

3


6

-

1


2

-

1


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