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小学数学必背数值，记住这些，计算更快更准确
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2024-10-18
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小学数学必背数值，记住这些，计算更快更准确


简介：
1/2 =0.5=50% 1/3≈0.333 =33.3% 2/3≈0.667=66.7% 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% 1/6≈0.167=16.7% 5/6≈0.833=83.3% 1/8 =0.125=12.5% 3/8 =0.375=37.5% 5/8 =0.625=62.5% 7/8 =0.875=87.5% 1/9≈0.111=11.1% 1/10 =0.1=10% 1/20=0.05=5% 3/20=0.15=15% 7/20=0.35=35% 9/20=0.45=45% 11/20=0.55=55% 13/20=0.65 =65% 17/20=0.85=85% 19/20=0.95=95% 1/16=0.0625=6.25% 1/32 =0.03125=3.125% 1/64 =0.015625=1.5625% 1/7 =0.142857142857…≈0.143 =14.3% 2/7 =0.285714285714…≈0.286=28.6% 3/7 =0.428571428571…≈0.429=42.9% 4/7 =0.57142857142…≈0.571=57.1% 5/7 =0.714285714285…≈0.714=71.4% 6/7 =0.857142857142…≈0.857=85.7%