3.8*25.4+37.9*6.4(简算)
问题描述:
3.8*25.4+37.9*6.4(简算)
答
38×2.54+38×6.4-0.1×6.4=38×8.94-0.64=40×8.94-2×8.94-0.64
3.8*25.4+37.9*6.4(简算)
38×2.54+38×6.4-0.1×6.4=38×8.94-0.64=40×8.94-2×8.94-0.64