20以内连续加减混合填空练习(共50道)
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(     )+2-1=17

13+1-(     )=14

(     )-6+3=17

(     )-12+16=16

7+(     )-4=8

(     )-1+1=19

11+(     )-6=13

4-(     )+14=16

13-0+(     )=14

(     )-5+2=11

(     )+15-9=6

(     )-2+6=15

(     )-15+8=9

10+5-(     )=11

6-(     )+11=11

(     )+2-1=15

7+(     )-1=12

(     )-0+18=19

16+(     )-0=16

16-(     )+6=16

15+(     )-0=17

14-(     )+0=3

3-3+(     )=15

2-(     )+11=11

5+(     )-0=14

18-(     )+4=15

16+4-(     )=17

15+3-(     )=18

(     )+2-0=16

(     )+9-7=12

20+(     )-0=20

8+(     )-5=14

10+6-(     )=12

6+(     )-10=6

(     )-3+17=18

(     )+1-0=15

(     )+16-12=5

17+(     )-2=17

3+14-(     )=4

11-(     )+2=3

6-(     )+8=12

2+16-(     )=2

18-(     )+0=18

3+(     )-6=5

14+(     )-1=14

17+(     )-1=18

(     )+9-5=9

14-(     )+6=18

4+13-(     )=4

(     )+6-4=13

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