问题
解答题
脱式计算(能简算的要简算)
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答案
(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.