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(80十0.8)x1.25用简便方法怎么算

(80+0.8)×1.25 =80×1.25+0.8×1.25 =100+1 =101

1.25x(80+4)x2.5 解:简便计算 =1.25x80x2.5+4x2.5x1.25 =250+12.5 =262.5 祝学习进步。

括号去掉直接算

1.25 × (80 + 0.8) = 1.25 × 80 + 1.25 × 0.8 = 100 + 1 = 101

1.25×80.8 =1.25×(80+0.8) =1.25×80+1.25×0.8 =100+1 =101 你好,本题已解答,如果满意 请点右下角“采纳答案”。

1.25×17×80 =1.25×80×17 =100×17 =1700

请看这里 =1.25×80×8.46 =100×8.46 =846 请看看以上的解答

1.25x(80+0.8)x2.5 =1.25*80.8*2.5 =1.25*8*10.1*2.5 =10*10.1*2.5 =10*2.5*10.1 =25*(10+0.1) =25*10+25*0.1 =250+2.5 =252.5

图望采纳

(1.25-0.125)×80 =1.25×80-0.125×80 =100-10 =90

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