1、20以内的加减混合 5 + 4 - 8= 9 + 1 - 2= 7 + 10 - 5= 9 + 7 - 2= 19 - 19 + 18= 1 + 7 - 5= 7 + 8 - 5= 13 - 4 + 10= 9 + 5 - 12= 6 + 10 - 7= 11 - 9 + 1= 1 - 1 + 16= 18 + 1 - 7= 1 + 9 - 3= 8 -
2、2 + 1= 8 + 9 + 2 = 2 + 2 + 14 = 1 + 13 + 1 = 6 + 3 + 1 = 9 + 1 + 9 = 2 + 4 + 3 = 1 + 10 + 8 = 2 + 6 + 7 = 10 + 3 + 2 = 6 + 3 + 8 = 4 + 15 + 1 = 10 + 1 + 5 = 9 + 2 + 3 = 1 + 14 + 3 = 1 + 10 + 5 =
3、 9 - 5 - 1= 11 - 8 - 2= 8 - 4 - 3= 14 - 2 - 3= 7 - 2 - 2= 19 - 12 - 1= 17 - 1 - 11= 18 - 1 - 14= 14 - 6 - 5= 9 - 6 - 2= 17 - 16 - 1= 19 - 7 - 1= 12 - 6 - 4= 8 - 1 - 5= 11 - 2 - 8
4、 1 + 14 + 1 = 9 - 6 - 1= 1 + 15 + 3 = 4 + 4 + 6 = 10 + 1 + 6 = 17 - 13 - 3= 6 - 4 - 1= 1 + 4 + 4 = 10 + 4 + 5 = 1 + 2 + 5 = 9 +1 + 6 = 4 + 1 + 10 = 2 + 7 + 10 = 9 - 7 - 1=
5、 5 + 4 + 3 = 10 + 5 - 2= 4 - 2 + 16= 1 + 2 = 6 + 3 - 8= 1 - 1 + 19= 8 - 6 =19 + 1 = 14 + 4 - 5= 15 - 2 = 4 + 7 = 16 - 15 + 2= 2 + 13 = 10 + 5 = 11 - 1 = 11 + 8 = 8
6、 - 8 + 7= 8 - 2 + 1= 2 + 2 - 1= 4 + 4 - 2= 5 + 4 - 8= 3 - 2 + 1= 8 - 1 + 1= 8 - 3 + 2= 3 + 1 - 3= 3 + 6 - 7= 1 + 7 - 4= 4 + 4 - 3= 6 - 2 + 1= 8 + 1 - 1= 2 + 1 - 2= 1 + 8
7、 + 1 = 5 + 1 + 2 = 4 - 1 - 1= 2 + 5 + 1 = 3 - 2 - 1= 4 + 1 + 3 = 4 - 1 - 2= 9 - 4 - 1= 5 - 2 - 1= 3 + 5 + 1 = 10 - 5 - 4= 1 + 2 + 1 = 5 + 4 + 1 = 10 - 2 - 4= 2 + 2 + 5
8、 = 4 - 1 - 1= 8 - 7 - 1= 3 - 1 - 1= 8 - 5 - 2= 7 - 6 - 1= 3 - 1 - 1= 10 - 5 - 1= 4 - 3 - 1= 7 - 5 - 1= 10 - 8 - 1= 9 - 8 - 1= 10 - 7 - 2= 3 - 2 - 1= 5 - 2 - 2=
9、 4 - 3 - 1= 1 + 6 + 1 = 4 + 3 + 1 = 4 + 2 + 2 = 3 + 2 + 4 = 1 + 2 + 3 = 4 + 5 + 1 = 3 + 3 + 3 = 2 + 2 + 5 = 3 + 2 + 2 = 2 + 2 + 2 = 4 + 2 + 3 = 1 + 1 + 3 = 3 + 5 + 1 = 5 + 2 + 2
10、 4 + 3 + 2 = 8 + 1 = 8 + 3 = 5 + 3 = 7 + 1 = 4 + 5 = 4 + 5 = 6 + 3 = 2 + 8 = 7 + 1 = 6 + 1 = 7 + 2 = 6 + 2 = 7 + 1 = 3 + 4 = 7 + 3 =
11、 8 + 1 = 8 + 1 = 5 + 3 = 7 + 1 = 4 + 5 = 4 + 5 = 6 + 3 = 2 + 8 = 7 + 1 = 6 + 1 = 7 + 2 = 6 + 2 = 7 + 1 = 3 + 4 = 7 + 3 = ( ) - 10 = 21 4 - ( )=
12、10 17 +( ) = 18 7 + ( )= 20 ( )- 5 = 3 18 -( ) = 7 ( ) - 10 = 4 ( ) - 4 = 9 1 +( ) = 11 15 -( ) = 13 10-( ) = 1 ( ) + 3 = 12 ( ) - 11 = 5 ( ) - 2 = 3 18 -( ) = 3 5 + ( )= 8 8 + ( )= 10
13、 ( )- 2 = 3 ( ) - 4 = 1 ( ) + 2 = 10 ( ) + 1 = 8 4 - ( )= 2 ( ) - 1 = 1 9 -( ) = 0 ( ) - 6 = 2 ( ) + 1 = 10 5 +( ) = 8 ( ) + 5 = 8 8 +( ) = 10 ( ) + 3 = 4 10-( ) = 6 10-( )
14、 1 1 - 1 = 7 - 3 = 5 - 3 = 3 - 2 = 9 - 3 = 4 - 2 = 4 - 4 = 3 - 2 = 8 - 8 = 3 - 2 = 5 - 4 = 5 - 2 = 6 - 2 = 8 - 2 = 7 - 1 = 5 + 4 - 8= 9 + 1 - 2=
15、 7 + 10 - 5= 9 + 7 - 2= 19 - 19 + 18= 1 + 7 - 5= 7 + 8 - 5= 13 - 4 + 10= 9 + 5 - 12= 6 + 10 - 7= 11 - 9 + 1= 1 - 1 + 16= 18 + 1 - 7= 1 + 9 - 3= 8 - 2 + 1= 8 + 9 + 2 = 2 + 2 + 14 = 1 +
16、 13 + 1 = 6 + 3 + 1 = 9 + 1 + 9 = 2 + 4 + 3 = 1 + 10 + 8 = 2 + 6 + 7 = 10 + 3 + 2 = 6 + 3 + 8 = 4 + 15 + 1 = 10 + 1 + 5 = 9 + 2 + 3 = 1 + 14 + 3 = 1 + 10 + 5 = 9 - 5 - 1= 11 - 8 - 2= 8 - 4 - 3
17、 14 - 2 - 3= 7 - 2 - 2= 19 - 12 - 1= 17 - 1 - 11= 18 - 1 - 14= 14 - 6 - 5= 9 - 6 - 2= 17 - 16 - 1= 19 - 7 - 1= 12 - 6 - 4= 8 - 1 - 5= 11 - 2 - 8= 1 + 14 + 1 = 9 - 6 - 1=
18、 1 + 15 + 3 = 4 + 4 + 6 = 10 + 1 + 6 = 17 - 13 - 3= 6 - 4 - 1= 1 + 4 + 4 = 10 + 4 + 5 = 1 + 2 + 5 = 9 +1 + 6 = 4 + 1 + 10 = 2 + 7 + 10 = 9 - 7 - 1= 5 + 4 + 3 = 10 + 5 - 2= 4 - 2 + 16
19、 1 + 2 = 6 + 3 - 8= 1 - 1 + 19= 8 - 6 =19 + 1 = 14 + 4 - 5= 15 - 2 = 4 + 7 = 16 - 15 + 2= 2 + 13 = 10 + 5 = 11 - 1 = 11 + 8 = 8 - 8 + 7= 8 - 2 + 1= 2 + 2 - 1=
20、 4 + 4 - 2= 5 + 4 - 8= 3 - 2 + 1= 8 - 1 + 1= 8 - 3 + 2= 3 + 1 - 3= 3 + 6 - 7= 1 + 7 - 4= 4 + 4 - 3= 6 - 2 + 1= 8 + 1 - 1= 2 + 1 - 2= 1 + 8 + 1 = 5 + 1 + 2 = 4 - 1 -
21、 1= 2 + 5 + 1 = 3 - 2 - 1= 4 + 1 + 3 = 4 - 1 - 2= 9 - 4 - 1= 5 - 2 - 1= 3 + 5 + 1 = 10 - 5 - 4= 1 + 2 + 1 = 5 + 4 + 1 = 10 - 2 - 4= 2 + 2 + 5 = 4 - 1 - 1= 8 - 7 - 1=
22、 3 - 1 - 1= 8 - 5 - 2= 7 - 6 - 1= 3 - 1 - 1= 10 - 5 - 1= 4 - 3 - 1= 7 - 5 - 1= 10 - 8 - 1= 9 - 8 - 1= 10 - 7 - 2= 3 - 2 - 1= 5 - 2 - 2= 4 - 3 - 1= 1 + 6 + 1 = 4 + 3
23、 1 = 4 + 2 + 2 = 3 + 2 + 4 = 1 + 2 + 3 = 4 + 5 + 1 = 3 + 3 + 3 = 2 + 2 + 5 = 3 + 2 + 2 = 2 + 2 + 2 = 4 + 2 + 3 = 1 + 1 + 3 = 3 + 5 + 1 = 5 + 2 + 2 = 4 + 3 + 2 = 8 + 1 =
24、 8 + 3 = 5 + 3 = 7 + 1 = 4 + 5 = 4 + 5 = 6 + 3 = 2 + 8 = 7 + 1 = 6 + 1 = 7 + 2 = 6 + 2 = 7 + 1 = 3 + 4 = 7 + 3 = 8 + 1 = 8 + 1 = 5 +
25、 3 = 7 + 1 = 4 + 5 = 4 + 5 = 6 + 3 = 2 + 8 = 7 + 1 = 6 + 1 = 7 + 2 = 6 + 2 = 7 + 1 = 3 + 4 = 7 + 3 = ( ) - 10 = 21 4 - ( )= 10 17 +( ) = 18 7 + ( )= 20 (
26、 )- 5 = 3 18 -( ) = 7 ( ) - 10 = 4 ( ) - 4 = 9 1 +( ) = 11 15 -( ) = 13 10-( ) = 1 ( ) + 3 = 12 ( ) - 11 = 5 ( ) - 2 = 3 18 -( ) = 3 5 + ( )= 8 8 + ( )= 10 ( )- 2 = 3 ( ) - 4 = 1
27、 ( ) + 2 = 10 ( ) + 1 = 8 4 - ( )= 2 ( ) - 1 = 1 9 -( ) = 0 ( ) - 6 = 2 ( ) + 1 = 10 5 +( ) = 8 ( ) + 5 = 8 8 +( ) = 10 ( ) + 3 = 4 10-( ) = 6 10-( ) = 1 1 - 1 = 7 - 3 = 5 - 3 = 3 - 2 = 9 - 3 = 4 - 2 = 4 - 4 = 3 - 2 = 8 - 8 = 3 - 2 = 5 - 4 = 5 - 2 = 6 - 2 = 8 - 2 = 7 - 1 =






