问题
解答题
用简便方法计算(分步计分)
2000÷125÷8
5×99+5
102×12
125×12×8.
答案
(1)2000÷125÷8,
=2000÷(125×8),
=2000÷1000,
=2;
(2)5×99+5,
=5×(99+1),
=5×100,
=500;
(3)102×12,
=(100+2)×12,
=100×12+2×12,
=1200+24,
=1224;
(4)125×12×8,
=(125×8)×12,
=1000×12,
=12000.