а) 0,8 - 5/7 = 8/10 - 5/7 = 56/70 - 50/70 = 6/70 = 3/35б) 0,36 + 8/15 = 36/100 + 8/15 = 36/100 + 32/100 = 68/100 = 17/25в) 7/8 - 0,25 = 7/8 - 25/100 = 87/100 - 25/100 = 62/100 = 31/50г) 0,4 + 0,67 - 2/5 = 4/10 + 67/100 - 2/5 = 40/100 + 67/100 - 40/100 = 67/100д) 0,5 + 1/3 = 5/10 + 1/3 = 30/60 + 20/60 = 50/60 = 5/6е) 1/3 - 0,25 = 1/3 - 25/100 = 33/100 - 25/100 = 8/100 = 2/25ж) 0,125 + 5/12 = 125/1000 + 5/12 = 125/1000 + 417/1000 = 542/1000 = 271/500з) 0,75 - 3/16 + 1/4 = 75/100 - 3/16 + 25/100 = 75/100 - 18/100 + 25/100 = 82/100 = 41/50
а) 0,8 - 5/7 = 8/10 - 5/7 = 56/70 - 50/70 = 6/70 = 3/35
б) 0,36 + 8/15 = 36/100 + 8/15 = 36/100 + 32/100 = 68/100 = 17/25
в) 7/8 - 0,25 = 7/8 - 25/100 = 87/100 - 25/100 = 62/100 = 31/50
г) 0,4 + 0,67 - 2/5 = 4/10 + 67/100 - 2/5 = 40/100 + 67/100 - 40/100 = 67/100
д) 0,5 + 1/3 = 5/10 + 1/3 = 30/60 + 20/60 = 50/60 = 5/6
е) 1/3 - 0,25 = 1/3 - 25/100 = 33/100 - 25/100 = 8/100 = 2/25
ж) 0,125 + 5/12 = 125/1000 + 5/12 = 125/1000 + 417/1000 = 542/1000 = 271/500
з) 0,75 - 3/16 + 1/4 = 75/100 - 3/16 + 25/100 = 75/100 - 18/100 + 25/100 = 82/100 = 41/50