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50×0.98简便计算

50×0.98 =50×(1-0.02) =50×1-50×0.02 =50-1 =49 谢谢,请采纳

56x0.98 =56x1-56x0.02 =56-1.12 =54.88

1.5*(1-0.02)=1.5-0.03=1.47

4.5*0.98+9.8*0.55 =4.5*0.98+55*0.98 =(4.5+55)*0.98 =58.31

原式等于 7.5×(1-0.02) =7.5-0.15 =7.35 所以原式的结果为7.35

解: 25-25×0.98 =25×(1-0.98) =25×0.02 =0.5

0.25乘0.98乘4等于0.25乘4乘0.98等於1乘0.98等於0.98

详细步骤写在纸上了

解:原式=(1-0.02)x42 =1x42-0.02x42 =42-0.84 =41.16 分析:主要考察拆分法和分配律的运用。

7.03X0.98的简便计算 7.03x0.98 =7.03x(1-0.02) =7.03x1-7.03x0.02 =7.03-0.1406 =9.8894

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