问题 解答题
计算下面各题,第二行用简便方法计算.
37+160×8(256+140÷28)×6150+90×12-65
68×10266×99+66800÷4÷25.
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.

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