问题 解答题
计算下面各题,怎样简便就怎样计算.
(1)98+376+2(2)569-75(3)25×97×4
(4)137×38+63×38(5)300÷25÷4(6)158+320÷(20-12)
答案

(1)98+376+2,

=(98+2)+376,

=100+376,

=476;

(2)569-75=494;

(3)25×97×4,

=(25×4)×97,

=100×97,

=9700;

(4)137×38+63×38,

=(137+63)×38,

=200×38,

=7600;

(5)300÷25÷4,

=300÷(25×4),

=300÷100,

=3;

(6)158+320÷(20-12),

=158+320÷8,

=158+40,

=198.

单项选择题
单项选择题