问题
解答题
脱式计算.
|
答案
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.