Question

3.02×2.4×0.5简算

3.02×2.4×0.5简算

Answer 1

3.02×2.4×0.5简算：

3.02×2.4×0.5

=3.02×1.2

=（3+0.02）×1.2

=3×1.2+0.02×1.2

=3.6+0.024

=3.624

扩展资料

简便计算方法：

去尾法。

在减法计算时，若减数和被减数的尾数相同，先用被减数减去尾数相同的减数，能使计算简便。

例题

2356-159-256

=2356-256-159

=2100-159

=1941

算式中第二个减数256与被减数2356的尾数相同，可以交换两个数的位置，让2356先减256，可使计算简便。

Answer 2

3.02×2.4×0.5
=3.02×1.2
=（3+0.02）×1.2
=3×1.2+0.02×1.2
=3.6+0.024
=3.624

Answer 3

3.02×2.4×0.5
=3.02×1.2
=3*1.2+0.02*1.2
=3.6+0.024
=3.624