Question

2.3×0.6+23×0.04怎么做?

Answer 1

你好，可以将23变成2.3，即缩小了十倍，而与其相乘的0.04即可扩大10倍，变为0.4。这时，即可运用乘法结合率，即原式为:2.3×（0.6+0.4）=2.3X1=2.3

Answer 2

2.3×0.6+23×0.04
=2.3×0.6+2.3×0.4
=2.3×(0.6+0.4)
=2.3