问题
解答题
计算下面各题,怎样算简便就怎样计算.
3618÷45+1620
(2.5×8)÷(0.1-0.09)
1000÷32÷0.25÷1.25.
答案
(1)3618÷45+1620,
=80.4+1620,
=1700.4;
(2)(2.5×8)÷(0.1-0.09),
=20÷0.01,
=2000;
(3)1000÷32÷0.25÷1.25,
=1000÷(32×0.25×1.25),
=1000÷(4×8×0.25×1.25),
=1000÷[(4×0.25)×(8×1.25)],
=1000÷(1×10),
=1000÷10,
=100.