Subtract from 20

Subtraction of two numbers with minuend up to 20

12

-

6


20

-

13


8

-

1


15

-

5


6

-

2


20

-

15


9

-

2


19

-

15


12

-

1


8

-

6


7

-

1


3

-

2


2

-

1


19

-

13


6

-

5


10

-

9


4

-

1


7

-

6


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