6+(     )=20

(     )+1=16

(     )+4=19

11+(     )=12

16+(     )=16

(     )+13=18

(     )+6=19

17+(     )=18

(     )+2=17

7+(     )=15

6+(     )=19

(     )+0=11

(     )+12=18

(     )+0=11

17+(     )=17

(     )+9=20

(     )+1=19

(     )+2=20

(     )+0=19

(     )+13=18

(     )+6=14

(     )+5=14

4+(     )=11

(     )+12=18

(     )+2=15

(     )+14=20

(     )+15=15

4+(     )=20

(     )+11=16

(     )+9=20

(     )+13=13

(     )+0=12

8+(     )=19

(     )+10=19

6+(     )=17

0+(     )=13

17+(     )=18

16+(     )=19

(     )+2=12

(     )+1=20

12+(     )=17

(     )+1=14

2+(     )=20

1+(     )=16

(     )+1=20

(     )+1=18

(     )+7=17

(     )+4=20

2+(     )=15

(     )+1=17