问题
解答题
能简算的要简算
|
答案
(1)86.2÷12.5÷0.8,
=86.2÷(12.5×0.8),
=86.2÷10,
=8.62;
(2)23.6×1.25-23.6×0.25,
=23.6×(1.25-0.25),
=23.6×1,
=23.6;
(3)2.3+9.2÷(22-19.7),
=2.3+9.2÷2.3,
=2.3+4,
=6.3;
(4)3.4÷[(1.2+0.5)×5],
=3.4÷[1.7×5],
=3.4÷8.5,
=0.4.