问题
解答题
用简便方法计算下面各题.
(1)8.35×101-8.35
(2)(3.4×0.8+9.2×3.4)÷34÷0.05.
答案
(1)8.35×101-8.35,
=8.35×(101-1),
=8.35×100,
=835;
(2)(3.4×0.8+9.2×3.4)÷34÷0.05,
=[3.4×(0.8+9.2)]÷34÷0.05,
=[3.4×10]÷34÷0.05,
=34÷34÷0.05,
=1÷0.05,
=20.