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0.45X12x0.2,0.87x5.2+4.64脱式计算

0.45X12x0.2 =(0.45x0.2)x12 =0.09x12 =1.08 0.87x5.2+4.64 =0.87x5+0.87x0.2+4.64 =4.35+0.174+4.64 =4.524+4.64 =9.164

4.7x5.9+5.2x4.7-4.7x1.1 =4.7×(5.9+5.2-1.1) =4.7×10 =47

17.5÷0.5X1.8 =35x1.8 =63 , 你好,本题已解答,如果满意 请点右下角“采纳答案”。

(3.64一5.696/8.9x1.2)x0.05 =(3.64-0.64x1.2)x0.05 =(3.64-0.768)x0.05 =2.872x0.05 =0.1436 (请采纳)

你好! 125×7×24 = 125×7×3×8 = (125×8)×(7×3) = 1000×21 = 21000 0.72 + 0.28×1.5÷2.1 = 0.72 + 0.4×0.7×1.5 ÷ (3×0.7) = 0.72 + 0.4×1.5 ÷ 3 = 0.72 + 0.4×0.5 = 0.72 + 0.2 = 0.74 2/3 x + 2/5 x = 4/5 10/15 x + 6/15 x = 4/5 16/15 x = 4/5...

4.06x1.5x0.9 =2.03x2x1.5x0.9 =2.03x3x(10-0.1) =6.09x10-6.09x0.1 =60.9-0.609 =60.291

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