问题
解答题
计算下面各题,第二行用简便方法计算.
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答案
(1)37+160×8,
=37+1280,
=1317;
(2)(256+140÷28)×6,
=(256+5)×6,
=261×6,
=1566;
(3)150+90×12-65,
=150+1080-65,
=1230-65,
=1165;
(4)68×102,
=68×(100+2),
=68×100+68×2,
=6800+136,
=6936;
(5)66×99+66,
=66×(99+1),
=66×100,
=6600;
(6)800÷4÷25,
=800÷(4×25),
=800÷100,
=8.