1.Zastąp oba ułamki tak ,aby otrzymać ułamki o jednakowych mianownikach, i oblicz.
a)1/4 + 3/5 =
b)4/5 - 7/11 =
c)6/7 + 1/8 =
d) 1/5 - 1/9 =
2.Oblicz
a)2/3 + 1/4 =
b)3/4 + 3/5 =
c)1/4 + 2/7 =
d)2/3 + 1/8 =
e)1/4 + 1/6 =
f) 1/6 + 4/9 =
g) 3/8 + 7/10 =
h) 5/6 + 3/8 =
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1.
a) 1/4 + 3/5 =5/20 +12/20 = 17/20
b) 4/5 - 7/11 =44/55 - 28/55 = 16/55
c) 6/7 + 1/8 =48/56 + 7/56 = 55/56
d)1/5 - 1/9 = 9/45 + 5+45 = 14/45
a)2/3 + 1/4 = 8/12 + 3/12 = 11/12
b)3/4 + 3/5 = 15/20 + 12/20 = 27/20
c)1/4 + 2/7 = 7/28 + 8/28 = 14/28 = 1/2
d)2/3 + 1/8 = 16/24 + 3/24 =19/24
e)1/4 + 1/6 = 6/24 + 4/24 = 10/24
f) 1/6 + 4/9 = 9/73 + 24/73 = 33/73
g) 3/8 + 7/10 = 20/80 + 56/80 = 76/80
h) 5/6 + 3/8 = 40/48 + 23/48 = 43/48