Question

3.16÷0.4+1.5×0.38脱式？

Answer 1

根据数学运算的优先级，先进行乘法和除法，再进行加法和减法，按照这个顺序进行计算，得到：
3.16÷0.4+1.5×0.38 = 7.9 + 0.57 = 8.47
因此，3.16÷0.4+1.5×0.38的结果为8.47。

Answer 2

3.16÷0.4+1.5×0.38
=3.16×5/2+1.5×0.38
=3.16×2.5+1.5×0.38
=3.16×（1+1.5）+1.5×0.38
=3.16+3.16×1.5+1.5×0.38
=3.16+1.5×（3.16+0.38）
=8.47