Autorzy:Krystyna Zarzycka, Piotr Zarzycki
Wydawnictwo:GWO
Rok wydania:2014
Oblicz.4.75 gwiazdek na podstawie 8 opinii

a) `1/2+1/3=3/6+2/6=5/6`

b)`8 3/4 +1/6 +3 5/8 = 210/24 +4/24+87/24=301/24 = 12 13/24`

c)`16 5/9 - 2 1/3 = 149/9 - 21/9= 128/9 = 14 2/9`

d)`48 7/10 - 13 1/4 = 974/20 - 265/20 = 709/20 = 35 9/20`

e)`2 3/7 + 2/5 = 2 15/35 + 14 /35 = 2 29/35`

f) `232 5/7 + 11 3/5 = 232 25/35 + 11 21/35 = 244 11/35`

g)`2 3/8 - 6/7 = 2 21/56 - 48/56 = 1 29/56`

h)`56 2/9 - 7 7/8 = 56 16/72 - 7 63/72 = 48 25/72`

i)`14 2/9 + 6 1/3 = 14 2/9 + 6 3/9 = 20 5/9`

j) `8/11 - 2/3 = 24/33 - 22/33 = 2/33`

k) `126 1/5 - 2/3 = 1893/15 - 10/15 = 1883/15 = 125 8/15`

l) `13 7/12 - 9 8/9 = 489/36 - 356/36 = 133/36 = 3 25/36`