题目内容
怎样简便怎样算.![]() | ![]() | ![]() |
24×(![]() ![]() | 58÷4+0.25×41+![]() | ![]() ![]() ![]() |
解:![]() =( ![]() ![]() =1× ![]() = ![]() | ||
24×(![]() ![]() 24× ![]() ![]() =15+20, =35; |


=18.8-3.8-(

=15-1,
=14;
58÷4+0.25×41

=58×


=(58+41+1)×

=100×

=25;
(1


=(1


=

=


=


=

=

=

分析:
![]() ![]() 24×( ![]() | ||
18.8-![]() ![]() 58÷4+0.25×41 ![]() |




点评:此题主要考查根据整数乘法分配律、减法的运算性质进行分数的简便计算.

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题目内容
怎样简便怎样算.![]() | ![]() | ![]() |
24×(![]() ![]() | 58÷4+0.25×41+![]() | ![]() ![]() ![]() |
解:![]() =( ![]() ![]() =1× ![]() = ![]() | ||
24×(![]() ![]() 24× ![]() ![]() =15+20, =35; |
![]() ![]() 24×( ![]() | ||
18.8-![]() ![]() 58÷4+0.25×41 ![]() |