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1、 20 以内的加减混合5 + 4 - 8=9 + 1 - 2=1 + 7 - 5=6 + 10 - 7=1 + 9 - 3=1 + 13 + 1 =7 + 10 - 5=7 + 8 - 5=11 - 9 + 1=8 - 2 + 1=6 + 3 + 1 =9 + 7 - 2=19 - 19 + 18=9 + 5 - 12=18 + 1 - 7=2 + 2 + 14 =13 - 4 + 10=1 - 1 + 16=8 + 9 + 2 =9 + 1 + 9 =2 + 4 + 3 =6 + 3 + 8 =1 + 14 + 3 =8 - 4 - 3=1 + 10 + 8 =2 + 6 + 7 =10 +

2、 3 + 2 =4 + 15 + 1 =1 + 10 + 5 =14 - 2 - 3=10 + 1 + 5 =9 - 5 - 1=9 + 2 + 3 =11 - 8 - 2=19 - 12 - 1=9 - 6 - 2=7 - 2 - 2=17 - 1 - 11=18 - 1 - 14=14 - 6 - 5=17 - 16 - 1=11 - 2 - 8=19 - 7 - 1=12 - 6 - 4=9 - 6 - 1=8 - 1 - 5=1 + 14 + 1 =10 + 1 + 6 =10 + 4 + 5 =2 + 7 + 10 =1 + 15 + 3 =6 - 4 - 1=4 + 4 + 6 =

3、1 + 4 + 4 =4 + 1 + 10 =17 - 13 - 3=1 + 2 + 5 =9 - 7 - 1=9 +1 + 6 =5 + 4 + 3 =10 + 5 - 2=1 - 1 + 19=4 + 7 =4 - 2 + 16=8 - 6 =19 + 1 =16 - 15 + 2=11 + 8 =1 + 2 =6 + 3 - 8=15 - 2 =14 + 4 - 5=2 + 13 =8 - 8 + 7=5 + 4 - 8=10 + 5 =8 - 2 + 1=3 - 2 + 1=11 - 1 =2 + 2 - 1=4 + 4 - 2=8 - 1 + 1=1 + 7 - 4=2 + 1 -

4、2=2 + 5 + 1 =9 - 4 - 1=8 - 3 + 2=4 + 4 - 3=1 + 8 + 1 =3 - 2 - 1=3 + 1 - 3=6 - 2 + 1=5 + 1 + 2 =4 + 1 + 3 =3 + 5 + 1 =3 + 6 - 7=8 + 1 - 1=4 - 1 - 1=4 - 1 - 2=10 - 5 - 4=5 - 2 - 1= 1 + 2 + 1 =4 - 1 - 1=7 - 6 - 1=7 - 5 - 1=3 - 2 - 1=5 + 4 + 1 =8 - 7 - 1=3 - 1 - 1=10 - 8 - 1=5 - 2 - 2=10 - 2 - 4=3 - 1 -

5、 1=10 - 5 - 1=9 - 8 - 1=4 - 3 - 1=2 + 2 + 5 =8 - 5 - 2=4 - 3 - 1=10 - 7 - 2=1 + 6 + 1 =4 + 3 + 1 =4 + 5 + 1 =2 + 2 + 2 =5 + 2 + 2 =5 + 3 =4 + 2 + 2 =3 + 3 + 3 =4 + 2 + 3 =4 + 3 + 2 =7 + 1 =3 + 2 + 4 =2 + 2 + 5 =1 + 1 + 3 =8 + 1 =1 + 2 + 3 =3 + 2 + 2 =3 + 5 + 1 =8 + 3 =4 + 5 =4 + 5 =6 + 3 =7 + 2 =7 +

6、 3 =7 + 1 =2 + 8 =6 + 2 =2 + 8 =7 + 1 =6 + 1 =6 + 2 =8 + 1 =4 + 5 =7 + 1 =7 + 1 =7 + 1 =8 + 1 =4 + 5 =6 + 1 =3 + 4 =3 + 4 =5 + 3 =6 + 3 =7 + 2 =7 + 3 =( ) - 10 = 21( )- 5 = 34 - ( )= 1017 +( ) = 187 + ( )= 20( ) - 4 = 9( ) + 3 = 125 + ( )= 8( ) + 2 = 109 -( ) = 018 -( ) = 715 -( ) = 13( ) - 2 = 3( )

7、- 2 = 3( ) - 10 = 410-( ) = 118 -( ) = 3( ) - 4 = 1( ) - 1 = 15 +( ) = 810-( ) = 61 +( ) = 11( ) - 11 = 58 + ( )= 10( ) + 1 = 8( ) - 6 = 28 +( ) = 104 - ( )= 2( ) + 1 = 10( ) + 3 = 4( ) + 5 = 810-( ) = 11 - 1 =4 - 2 =5 - 4 =7 - 3 =5 - 3 =3 - 2 =8 - 8 =8 - 2 =9 - 3 =3 - 2 =7 - 1 =4 - 4 =5 - 2 =3 - 2

8、=6 - 2 = 5 + 4 - 8=9 + 1 - 2=1 + 7 - 5=6 + 10 - 7=1 + 9 - 3=1 + 13 + 1 =7 + 10 - 5=7 + 8 - 5=11 - 9 + 1=8 - 2 + 1=6 + 3 + 1 =9 + 7 - 2=19 - 19 + 18=9 + 5 - 12=18 + 1 - 7=2 + 2 + 14 =13 - 4 + 10=1 - 1 + 16=8 + 9 + 2 =9 + 1 + 9 =2 + 4 + 3 =6 + 3 + 8 =1 + 14 + 3 =8 - 4 - 3=1 + 10 + 8 =2 + 6 + 7 =10 + 3

9、 + 2 =4 + 15 + 1 =1 + 10 + 5 =14 - 2 - 3=10 + 1 + 5 =9 - 5 - 1=9 + 2 + 3 =11 - 8 - 2=19 - 12 - 1=9 - 6 - 2=7 - 2 - 2=17 - 1 - 11=18 - 1 - 14=14 - 6 - 5=17 - 16 - 1=11 - 2 - 8=19 - 7 - 1=12 - 6 - 4=9 - 6 - 1=8 - 1 - 5=1 + 14 + 1 =10 + 1 + 6 =10 + 4 + 5 =2 + 7 + 10 =1 + 15 + 3 =6 - 4 - 1=4 + 4 + 6 =1

10、+ 4 + 4 =4 + 1 + 10 =17 - 13 - 3=1 + 2 + 5 =9 - 7 - 1=9 +1 + 6 =5 + 4 + 3 =10 + 5 - 2=1 - 1 + 19=4 + 7 =4 - 2 + 16=8 - 6 =19 + 1 =16 - 15 + 2=11 + 8 =1 + 2 =6 + 3 - 8=15 - 2 =14 + 4 - 5=2 + 13 =8 - 8 + 7=5 + 4 - 8=10 + 5 =8 - 2 + 1=3 - 2 + 1=11 - 1 =2 + 2 - 1=4 + 4 - 2=8 - 1 + 1=1 + 7 - 4=2 + 1 - 2=

11、2 + 5 + 1 =9 - 4 - 1=8 - 3 + 2=4 + 4 - 3=1 + 8 + 1 =3 - 2 - 1=3 + 1 - 3=6 - 2 + 1=5 + 1 + 2 =4 + 1 + 3 =3 + 5 + 1 =3 + 6 - 7=8 + 1 - 1=4 - 1 - 1=4 - 1 - 2=10 - 5 - 4=5 - 2 - 1= 1 + 2 + 1 =4 - 1 - 1=7 - 6 - 1=7 - 5 - 1=3 - 2 - 1=5 + 4 + 1 =8 - 7 - 1=3 - 1 - 1=10 - 8 - 1=5 - 2 - 2=10 - 2 - 4=3 - 1 - 1

12、=10 - 5 - 1=9 - 8 - 1=4 - 3 - 1=2 + 2 + 5 =8 - 5 - 2=4 - 3 - 1=10 - 7 - 2=1 + 6 + 1 =4 + 3 + 1 =4 + 5 + 1 =2 + 2 + 2 =5 + 2 + 2 =5 + 3 =4 + 2 + 2 =3 + 3 + 3 =4 + 2 + 3 =4 + 3 + 2 =7 + 1 =3 + 2 + 4 =2 + 2 + 5 =1 + 1 + 3 =8 + 1 =1 + 2 + 3 =3 + 2 + 2 =3 + 5 + 1 =8 + 3 =4 + 5 =4 + 5 =6 + 3 =7 + 2 =7 + 3

13、 =7 + 1 =2 + 8 =6 + 2 =2 + 8 =7 + 1 =6 + 1 =6 + 2 =8 + 1 =4 + 5 =7 + 1 =7 + 1 =7 + 1 =8 + 1 =4 + 5 =6 + 1 =3 + 4 =3 + 4 =5 + 3 =6 + 3 =7 + 2 =7 + 3 =( ) - 10 = 21( )- 5 = 34 - ( )= 1017 +( ) = 187 + ( )= 20( ) - 4 = 9( ) + 3 = 125 + ( )= 8( ) + 2 = 109 -( ) = 018 -( ) = 715 -( ) = 13( ) - 2 = 3( )- 2 = 3( ) - 10 = 410-( ) = 118 -( ) = 3( ) - 4 = 1( ) - 1 = 15 +( ) = 810-( ) = 61 +( ) = 11( ) -

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