脱式计算(能简算的要简算)6.27×7.1+6.27×2.93.208÷1.6-0.93619.6÷0.125÷80.75+1.25×0.2+0.8.

发布时间:2020-07-30 23:37:55

脱式计算(能简算的要简算) 6.27×7.1+6.27×2.93.208÷1.6-0.93619.6÷0.125÷80.75+1.25×0.2+0.8.

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解:
(1)6.27×7.1+6.27×2.9,
=6.27×(7.1+2.9),
=6.27×10,
=62.7;

(2)3.208÷1.6-0.936,
=2.005-0.936,
=1.069;

(3)19.6÷0.125÷8,
=19.6÷(0.125×8),
=19.6÷1,
=19.6;

(4)0.75+1.25×0.2+0.8,
=0.75+0.25+0.8,
=1+0.8,
=1.8.

解析分析:(1)根据乘法分配律进行简算;(2)先算除法,再算减法;(3)19.6连续除以0.125与8,等于连续除以0.125与8的乘积;(4)先算乘法,再算加法.

点评:根据题意,先找清运算顺序,然后再进一步计算即可;能简算的要简算.
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