题目内容
脱式计算.
| 500-271+18 | 1400-28×26 | 45×27+123. |
(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.
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