8.9乘以0.2除以8.9乘以0.2简便方法计算
问题描述:
8.9乘以0.2除以8.9乘以0.2简便方法计算
答
8.9×0.2÷8.9×0.2=8.9÷8.9×(0.2×0.2)=1×0.04=0.04
8.9乘以0.2除以8.9乘以0.2简便方法计算
8.9×0.2÷8.9×0.2=8.9÷8.9×(0.2×0.2)=1×0.04=0.04