题目内容
简便计算
6.33×101-6.33 | 1.6×55.4-55.4×0.6. |
分析:①利用乘法分配律计算,变成6.33×(101-1)计算简便;
②利用乘法分配律计算,变成55.4×(1.6-0.6)计算简便.
②利用乘法分配律计算,变成55.4×(1.6-0.6)计算简便.
解答:解:①6.33×101-6.33,
=6.33×(101-1),
=6.33×100,
=633;
②1.6×55.4-55.4×0.6,
=55.4×(1.6-0.6),
=55.4×1,
=55.4.
=6.33×(101-1),
=6.33×100,
=633;
②1.6×55.4-55.4×0.6,
=55.4×(1.6-0.6),
=55.4×1,
=55.4.
点评:此题考查简便运算,解决此题的关键是乘法的分配律.
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简便计算
6.33×101-6.33 | 1.6×55.4-55.4×0.6. |