Subtract from 20

Subtraction of two numbers with minuend up to 20

10

-

3


3

-

1


16

-

1


15

-

12


20

-

5


17

-

16


4

-

1


17

-

8


9

-

7


12

-

1


10

-

2


14

-

13


8

-

7


17

-

6


16

-

2


19

-

12


10

-

3


6

-

3


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