问题
解答题
计算下面各题,能简算的要简算.
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答案
(1)7×125×8
=7×(125×8)
=7×1000
=7000;
(2)120-20×2+45
=120-40+45
=80+45
=125;
(3)35×(32+128÷32)
=35×(32+4)
=35×36
=1260;
(4)43×36+36×57
=(43+57)×36
=100×36
=3600;
(5)640÷[4×(16-8)]
=640÷[4×8]
=640÷32
=20;
(6)68×101-68
=68×(101-1)
=68×100
=6800.