题目内容
脱式计算.
500-271+18 | 1400-28×26 | 45×27+123. |
分析:(1)按照从左到右的顺序计算;
(2)先算乘法,再算减法;
(3)先算乘法,再算加法.
(2)先算乘法,再算减法;
(3)先算乘法,再算加法.
解答:解:(1)500-271+18,
=229+18,
=247;
(2)1400-28×26,
=1400-728,
=672;
(3)45×27+123,
=1215+123,
=1338.
=229+18,
=247;
(2)1400-28×26,
=1400-728,
=672;
(3)45×27+123,
=1215+123,
=1338.
点评:本题考查了简单的四则混合运算,计算时先理清楚运算顺序,根据运算顺序逐步求解即可.
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