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 = ?