概要: 0.8 2 = 120÷3÷20= 1 - - = 3.5÷0.07= + + = 11²= -( - )= ×0× = 2.5×7×4= 2 、能简算的要简算。上一页 [1] [2] [3] [4] [5] [6] [7] [8] 下一页
2 、能简算的要简算。
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