问题
解答题
递等式计算
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答案
(1)0.7+9.6×0.25,
=0.7+2.4,
=3.1;
(2)(2.44-1.8)÷0.4×2.5,
=0.64÷0.4×2.5,
=1.6×2.5,
=4;
(3)23.4-0.8-13.4-7.2,
=(23.4-13.4)-(0.8+7.2),
=10-8,
=2;
(4)[3.2-3.2×(30.4-29.85)]÷1.8,
=[3.2-3.2×0.55]÷1.8,
=[3.2-1.76]÷1.8,
=1.44÷1.8,
=0.8.