8分之7乘以16分之13乘以16分之13 3分之2乘以28分之15乘以21分之5 7分之5乘以35乘以21分之8 1/5*8+1/8*11+...1/98*101 2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4 10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5 8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8 9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18 4/9×3= 5÷1/3 = 1/2÷1/3 = 2/7×3/9 ÷2/7 = 21/25÷42= 4/5×3/4 = 8.7×0.2= 4×0.25= 1/7×14= 2/3÷5/6= 1.25×8= 3/5÷5/8= 6/7×3/2= 6×8.8= 4/11÷4= 4/9×3/8= 5/3÷5= 0÷8/3= 4/7 -2/3= 2/7×2 = 41/12×4= 4÷3/16= 12÷9/4 = 75/8 ÷5= 12×16/9 = 2/3×3= 8÷9/4 = 5/3÷3/5 = 4/5×5/8 = 7/9×9/7 = 2.64+3.6= 2.4×50= 3500÷70= 2050-298= 2+7÷9= 0.3÷3%= 81.2-11÷7-×3= 6696÷62-6.5×10.6 = 1. 89÷100= 0.82+0.08= 73×1= 0.63×10= 4÷10= 17÷1000= 0.56+0.4= 1.25×100= 5.6+99= 100÷25= 1-0.93= 90-0.9= 794-198= 68×25= 6756-193-207= 72×125= 97×360+3×360= 8/63 * 9/70 * 15/28 = ? 10/63 * 9/28 * 14/15 = ? 15/56 * 9/56 * 9/70 = ? 12/35 * 8/105 * 9/10 = ? 18/35 * 12/35 * 14/45 = ? 9/56 * 9/28 * 9/20 = ? 14/45 * 9/14 * 21/40 = ? 12/35 * 8/63 * 8/15 = ? 20/21 * 8/21 * 28/45 = ? 9/70 * 9/35 * 9/28 = ? 9/35 * 9/56 * 20/63 = ? 9/280 * 20/63 * 12/35 = ? 35/72 * 21/40 * 8/105 = ? 8/9 * 8/63 * 8/63 = ? 35/36 * 40/63 * 8/35 = ? 9/14 * 10/21 * 21/40 = ? 9/56 * 15/56 * 9/70 = ? 8/105 * 10/63 * 20/21 = ? 45/56 * 8/63 * 8/35 = ? 8/63 * 9/35 * 18/35 = ?