问题 解答题
脱式计算,能简便运算的要简便运算
774÷(27+16)39+144+6127×4×5857-318-182.
答案

(1)774÷(27+16),

=774÷43,

=18;

(2)39+144+61,

=39+61+144,

=100+144,

=244;

(3)27×4×5,

=27×(4×5),

=27×20,

=540;

(4)857-318-182,

=857-(318+182),

=857-500,

=357.

单项选择题
单项选择题