问题 解答题

下面的计算对吗?请把错误的改过来.

1.25×(8+0.8)

=1.25×8+0.8

=10+0.8

=10.8______

3.6+2.4×0.06

=6×0.06

=O.36______.

答案

(1)×;

改正:

1.25×(8+0.8),

=1.25×8+1.25×0.8,

=10+1,

=11;

(2)×;

改正:

3.6+2.4×0.06,

=3.6+0.144,

=3.744.

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