小学数学必背常用数据(共2页).doc

精选优质文档-倾情为你奉上小学数学必背常用数据一、分小百互化1/2=0.5=50% 1/4=0.25=25%3/4=0.75=75%1/5=0.2=20% 2/5=0.4=40%3/5=0.6=60% 4/5=0.8=80%1/8=0.125=12.5% 3/8=0.375=37.5% 5/8=0.625=62.5% 7/8=0.875=87.5%1/10=0.1=10%3/10=0.3=30%1/20=0.05=5%3/20=0.15=15%1/25=0.04=4%2/25=0.08=8%1/50=0.02=2%3/50=0.06=6%1/100=0.01=1%1/125=0.008=0.8%2/125=0.016=1.6%1/30.333=33.3%2/30.667=66.7%1/60.167=16.7%5/60.833=83.3%1/90.111=1