20以内连续加减混合填空练习(共50道)
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2-1+(     )=11

11-(     )+10=11

9+6-(     )=10

13+6-(     )=19

15+3-(     )=17

20-16+(     )=7

9+(     )-5=10

1-(     )+11=12

3+11-(     )=13

6+11-(     )=17

(     )-2+4=13

1+(     )-2=10

(     )+10-8=7

7+5-(     )=10

(     )-7+2=9

(     )-7+2=14

11-(     )+12=19

14+0-(     )=14

1-0+(     )=12

10+10-(     )=14

(     )+14-5=13

(     )+11-5=7

(     )+0-0=19

(     )+5-1=18

3-0+(     )=12

2-(     )+13=15

14+3-(     )=14

19-(     )+5=8

6+8-(     )=14

(     )-3+10=14

13-(     )+5=15

(     )-16+2=2

(     )+5-1=19

(     )-3+14=17

18+2-(     )=18

20+0-(     )=20

2+14-(     )=14

0+(     )-4=11

9+5-(     )=13

(     )+5-0=17

14+(     )-0=16

15+(     )-1=16

16+2-(     )=16

3+(     )-7=7

(     )+7-5=9

3+(     )-3=9

0+20-(     )=8

16+(     )-0=16

18+2-(     )=18

7+6-(     )=7

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