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.