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计算下面各题.(能简便的就简便)715×14+715(712+124)÷12928×14×4
问题详情
参考答案
(1)715×14+715
=715×(14+1)
=715×15
=7;
(2)(712+124)÷12
=712×2+124×2
=76+112
=114;
(3)928×14×49
=928×49×14
=17×14
=2;
(4)12÷56×512
=12×512÷56
=5÷56
=6;
(5)145÷25÷17
=145÷(25×17)
=145÷235
=49;
(6)14÷56×512
=310×512
=18;
(7)(514+57)÷67
=1514÷67
=114;
(8)13×(45-57)
=13×335
=135.
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