精英家教网 > 小学数学 > 题目详情
1
4
×
1
5
÷
1
4
×
1
4
=1
×
×
.(判断对错)
分析:在计算
1
4
×
1
5
÷
1
4
×
1
4
时,应按运算顺序从左往右依次运算.也可调整运算顺序,使计算简便.
解答:解:
1
4
×
1
5
÷
1
4
×
1
4

=
1
20
×4×
1
4

=
1
5
×
1
4

=
1
20

故答案为:×.
点评:解答此题,应注意运算顺序.此题也可这样解答:
1
4
×
1
5
÷
1
4
×
1
4
=
1
4
÷
1
4
×
1
5
×
1
4
=1×
1
5
×
1
4
=
1
20
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