(0.62加上7.638除以0.1)除以0.25脱式(简算)
问题描述:
(0.62加上7.638除以0.1)除以0.25脱式(简算)
答
原式=(0.62+76.38)x4
=77x4
=70x4+7x4
=280+28
=308