A-A+
计算下面各题 能简便的要简便计算.7×79+27×5959×25÷23(512+19-518
问题详情
7×
参考答案
(1)7×79+27×59
=499+1063
=53863;
(2)59×25÷23
=29÷23
=13;
(3)(512+19-518)×36
=512×36+19×36-518×36
=15+4-10
=19-10
=9;
(4)[1-(15+23)×413]÷1120
=[1-1315×413]÷1120
=[1-415]÷1120
=1115÷1120
=113;
(5)(18+16)÷524-23×14
=724÷524-23×14
=75-16
=1730;
(6)4013×(26×340)
=4013×340×26
=313×26
=6.
考点: