问题
解答题
计算下面各题(能简算的要简算)
|
答案
(1)1.72+6.03+8.97+2.28,
=(1.72+2.28)+(6.03+8.97),
=4+15,
=19;
(2)25×48×125,
=(25×6)×(8×125),
=150×1000,
=150000;
(3)72.27-7.44-2.56,
=72.27-(7.44+2.56),
=72.27-10,
=62.27;
(4)(64-224÷14)×12,
=(64-16)×12,
=48×12,
=576;
(5)85×101,
=85×100+85×1,
=8500+85,
=8585;
(6)787×101-787,
=787×(101-1),
=787×100,
=78700.