问题
解答题
脱式计算,能简便运算的要简便运算
|
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.
脱式计算,能简便运算的要简便运算
|
(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.