题目内容
888×1.125 | 45×0.25+36÷4+×19 |
解:(1)888×1.125,
=(888+)×1.125,
=888×1.125+×1.125,
=999+1,
=1000;
(2)45×0.25+36÷4+×19,
=45×+36×+×19,
=(45+36+19)×,
=120×,
=30.
分析:(1)根据乘法分配律进行简算;
(2)根据乘法分配律进行简算.
点评:四则运算,先弄清运算顺序,然后再进一步计算,能简算的要简算.
=(888+)×1.125,
=888×1.125+×1.125,
=999+1,
=1000;
(2)45×0.25+36÷4+×19,
=45×+36×+×19,
=(45+36+19)×,
=120×,
=30.
分析:(1)根据乘法分配律进行简算;
(2)根据乘法分配律进行简算.
点评:四则运算,先弄清运算顺序,然后再进一步计算,能简算的要简算.
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