题目内容
【题目】下面各题,能简算的要简算.
(1)100﹣16×1.5÷12
(2)5.6﹣3.46+4.4﹣1.54
(3) ÷9+ ×
(4)60×( ﹣ )
(5) ÷[35×( ﹣ )]
【答案】
(1)解:
100﹣16×1.5÷12
=100﹣24÷12
=100﹣2
=98;
(2)解:
5.6﹣3.46+4.4﹣1.54
=5.6+4.4﹣3.46﹣1.54
=(5.6+4.4)﹣(3.46+1.54)
=10﹣5
=5;
(3)解:
÷9+ ×
= × + ×
=( + )×
=1×
= .
(4)解:
60×( ﹣ )
=60× ﹣60×
=24﹣10
=14;
(5)解:
÷[35×( ﹣ )]
= ÷[35× ﹣35× )]
= ÷[25﹣21]
= ÷4
= ,再运用乘法的分配律进行简算;(4)运用乘法的分配律进行简算;(5)先运用乘法的分配律简算中括号里的运算,再算括号外的除法.
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