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