题目内容
【题目】直接写出得数.
5.17+1.96+4.83= 12.5×0.34×8= 5.01×101﹣5.01= ﹙﹣)×= 5×()×6=
【答案】11.96,34,501, ,1
【解析】
试题分析:(1)运用加法交换律简算;
(2)运用乘法交换律简算;
(3)运用乘法分配律简算;
(4)先算小括号里面的减法,再算括号外的乘法;
(5)先把5×6结合在一起,然后运用乘法分配律和乘法结合律简算.
解:(1)5.17+1.96+4.83,
=(5.17+4.83)+1.96,
=10+1.96,
=11.96;
(2)12.5×0.34×8,
=12.5×8×0.34,
=100×0.34,
=34;
(3)5.01×101﹣5.01,
=5.01×(101﹣1),
=5.01×100,
=501;
(4)﹙﹣)×,
=×,
=;
(5)5×()×6,
=(5×6)×(),
=5×6×﹣5×6×,
=5××6﹣6××5,
=1×6﹣1×5,
=6﹣5,
=1.
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