1/2 × 7/8 = 7/16 2/3 × 5/12= 5/18 1/3 × 9/10= 3/10 2/3 × 2/5 = 4/15 1/4 × 4/7 = 1/7 3/4 × 26/35= 39/70 1/5 × 32/35= 17/93 2/5 × 2/7 = 4/35 3/5 × 1/3 = 1/5 4/5 × 8/21= 25/82 1/6 × 3/7 = 1/14 5/6 × 10/21= 25/63 1/7 × 11/21= 3/40 2/7 × 4/7 = 8/49 3/7 × 13/21= 13/49 4/7 × 2/3 = 8/21 5/7 × 5/7 = 25/49 6/7 × 16/21= 32/49 1/8 × 17/21= 8/79 3/8 × 6/7 = 9/28 5/8 × 19/21= 13/23 7/8 × 20/21= 5/6 1/9 × 5/8 = 5/72 2/9 × 5/9 = 10/81 4/9 × 35/72= 8/37 5/9 × 5/12= 3/13 7/9 × 25/72= 10/37 8/9 × 5/18= 20/81
注:\代表分号,/代表除号,2\1表示二分之一,5+4\1=5 4\1表示5又4/1(带分数)
5\6*5=6 5\4*2=5/8 2\1*4=2 4 4\5*2=2/5 3\1*5=3/5
7\2*6=7/12 5\2*6=5/12 3\5*2=3/10 5\7*2=5/14 5\6*1=5/6
7\9*2=7/18 5\4*2=5/8 2\45*0=0 5\6-5\4=5\2 2\1+2\1=1
4\5-4\5=0 3\2-3\1=3\1 5+4\1=5 4\1 5\1+5\1=5\2 7/7+7/7=2
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144
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 6/1*48=8 7/2*28=8 8/19*16=38
8/19*16=38 61/60*122=120 7/2*28=8 8/19*16=38 1/1*2=2
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18 2/7*2=2/14
5\4/2=5\2 5\6/2=5\3 3\2/1=3\2 5*5\1=1 5\9/3=5\3
7/1*8=56 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144
5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4 5/1*25=5
10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5 8/19*16=38
8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8 2\1*2=1
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
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