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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。

1.25x一x=80 解:0.25x=80 x=80÷0.25 x=320

( 1.25+0.9 ) ×80 = 1.25x80+0.9x80 =100+72 =172

1.25×80.8×0.3 =1.25×(80+0.8)×0.3 =(100+1)×0.3 =10.3

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

(1.25+12.5)×80 =1.25×80+12.5×80 =100+1000 =1100

80.5÷1.25 =80.5÷(10÷8) =80.5X8÷10 =644÷10 =64.4

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

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