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