题目内容
脱式计算.
| (4609-41×39)+43 | 1566÷54×(372-294) | 231×24-775×6 |
| (253+2997÷27)×38 | 515÷(607-36×14) | 316-69×6÷18. |
①(4609-41×39)+43
=(4609-1599)+43
=3010+43
=3053;
②1566÷54×(372-294)
=1566÷54×78
=29×78
=2262;
③231×24-775×6
=5544-4650
=894;
④(253+2997÷27)×38
=(253+111)×38
=364×38
=13832;
⑤515÷(607-36×14)
=515÷(607-504)
=515÷103
=5.
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