题目内容

下面各题,能简算的要用简便方法计算
4.02-3.5+0.987.08-0.74-1.267.75×[20÷(3.24-3.04)]
4.05÷0.81+2.43.7×4.5-4.4×3.70.034×0.5×0.6.
(1)4.02-3.5+0.98,
=5-3.5,
=1.5;
(2)7.08-0.74-1.26,
=7.08-2,
=5.08;
(3)7.75×[20÷(3.24-3.04)],
=7.75×【20÷0.2】,
=7.75×100,
=775;
(4)4.05÷0.81+2.4,
=5+2.4,
=7.4;
(5)3.7×4.5-4.4×3.7,
=3.7×0.1,
=0.37;
(6)0.034×0.5×0.6,
=0.034×0.3,
=0.0102.
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