Question

3.86×0.34等于多少列竖式计算？

Answer 1

3.86×0.34=1.3124

Answer 2

3.86×0.34
=4×0.34-0.14×0.34
=1.36-0.1×0.34-0.04×0.34
=1.36-0.034-0.0136
=1.326-0.0136
=1.3124
经计算3.86×0.34可这样，口算就能算出来了。我算对了吗。