A-A+
计算下面各题 注意使用简便算法.910÷74+37×910(1415-59-15)×4567
问题详情
参考答案
(1)910÷74+37×910
=910×47+37×910
=910×(47+37)
=910;
(2)(1415-59-15)×45
=1415×45-59×45-15×45
=42-25-9
=17-9
=8;
(3)67+79×32+56
=67+76+56
=67+(76+56)
=67+2
=267;
(4)3÷35-35÷3
=5-15
=445;
(5)6÷15÷35÷5
=30÷35÷5
=50÷5
=10;
(6)[56-(25+13)]×57
=[56-1115]×57
=110×57
=114;
(7)511×12÷511×12
=(511÷511)×(12×12)
=1×14
=14;
(8)34÷8+34÷87
=34×18+34×78
=34×(18+78)
=34;
(9)815×79-715×79
=(815-715)×79
=115×79
=7135.
考点:算法