20以内加法填空练习(共50道)
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(     )+18=20

18+(     )=20

7+(     )=20

(     )+15=20

(     )+5=19

14+(     )=16

(     )+16=19

(     )+10=18

4+(     )=15

(     )+10=17

(     )+2=12

3+(     )=15

(     )+1=20

(     )+15=20

16+(     )=17

3+(     )=18

7+(     )=11

8+(     )=12

(     )+5=13

19+(     )=19

1+(     )=19

(     )+10=15

9+(     )=14

(     )+10=20

(     )+15=17

(     )+12=20

9+(     )=11

13+(     )=18

17+(     )=18

(     )+1=14

10+(     )=16

(     )+7=18

13+(     )=13

5+(     )=18

(     )+12=17

(     )+6=19

6+(     )=18

(     )+6=19

(     )+5=19

(     )+0=18

18+(     )=19

(     )+2=17

12+(     )=14

3+(     )=13

(     )+11=12

(     )+2=16

1+(     )=16

(     )+18=20

(     )+1=19

4+(     )=18

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