四点八乘以零点二五简便计算等于脱式计算,
问题描述:
四点八乘以零点二五简便计算等于
脱式计算,
答
4.8乘0.25=4.8除以4=1.2
答
把4.8分开
4.8×0.25
=1.2×4×0.25
=1.2×1
=1.2
答
4*1.2*0.25
答
4.8×0.25
=1.2×4×0.25
=1.2×1
=1.2
答
4.8*0.25
=(4+0.8)*0.25
=4*0.25+0.8*0.25
=1+0.2
=1.2