50以内加减进阶题 100道 用时: 错误:
( ) - 0 = 6 13 + ( )= 42 10 + ( )= 32
( ) - 41 = 5 28 - ( )= 11 ( ) - 12 = 32
( )( )41 - (34 - (26 - (( )( )( )( ) 34 = 4 = )= )= )= 5 = 10 = 36 = 14 = 50 12 + ( )= 36 11 20 - ( )= 19 0 10 + ( )= 35 13 ( ) - 26 = 7 6 ( ) + 7 = 12 4 33 - ( )= 17 16 ( ) - 2 = 13 36 ( ) - 25 = 13 17 ( ) - 11 = 7 ( ) - 1 = 41
33 - ( )= 5
) - 1 = 47
2 + ( )= 11
) - 22 = 18
) + 4 = 16
) - 12 = 27
) - 38 = 11
) - 14 = 32
+ - ( ( - ( - ( + ( - (
( ) + 17 = 42 ( ) + 22 = 40 45 - ( )= 24
( ) - 3 = 16 14 - ( )= 0 ( ) + 23 = 44
26 + ( )= 35 ( ) + 6 = 16 37 - ( )= 31
( )( )14 - (15 - (( )( )( )( )( ) 16 = 12 = )= )= 3 = 21 = 2 = 20 = 4 = 18 ( ) - 34 6 - ( 3 45 - ( 11 46 - ( 38 13 + ( 13 ( ) - 41 9 + ( 1 ( ) - 22 4 + ( 7 = 20 )= 6 = 1 = 10 )= 36 2 = 21 )= 21 9 = 2 )= 42 22 - ( 35 + ( ) - ) - 29 - ( 40 - ( ) -32 - ( 38 - ( )= 7
)= 43
0 = 36
12
)= 13
)= 0
15 = 23
)= 26
)= 35
- + )( ) ( 10 = + - - ( - -
46 - ( )= 15 0 + ( )= 8 ( ) - 17 = 8
( ) + 0 = 40 ( ) - 14 = 13 ( ) + 30 = 34
39 - ( )= 5 ( ) + 12 = 17 ( ) - 27 = 14
29 + (6 + ( ( )43 + (( )17 + (( )( ) )= 47 )= 6 42 = 49 )= 50 16 = 13 )= 20 21 = 9 0 = 25 48 - ( )= 47 + ( )= 25 ( ) + 0 = 36 28 - ( )= 2 ( ) - 33 = 0 ( ) - 33 = 4 ( ) - 32 = 9
( ) + 2 = 30
42 - ( )= 28
38 - ( )= 18
14 + ( )= 30
2 + ( )= 7
35 + ( )= 48
( ) + 17 = 22
14 + - - -
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