1 3/4 + 2 1/2 = 1 3/4 + 2 2/4 = 3 5/4 = 4 1/4
3 2/9 + 1 2/3 = 3 2/9 + 1 6/9 = 4 8/9
4 4/5 + 1 1/2 = 4 8/10 + 1 5/10 = 5 13/10 = 6 3/10
b)
4/5 + 3/4 + 2/5 = 16/20 + 15/20 + 8/20 = 39/20 = 1 19/20
5/7 + 1/2 + 6/7 = 10/14 + 7/14 + 12/14 = 29/14 = 2 1/14
2/8 + 1/3 + 5/8 = 6/24 + 8/24 + 15/24 = 29/24 = 1 5/24
c)
1 5/6 + 2 2/3 + 1 4/9 = 1 15/18 + 2 12/18 + 1 8/18 = 4 45/18 = 6 9/18 = 6 1/2
1 3/8 + 2 1/3 + 1 5/6 = 1 9/24 + 2 8/24 + 1 20/24 = 4 37/24 = 5 11/24
2 7/10 + 1 3/4 + 4/5 = 2 14/20 + 1 15/20 + 16/20 = 3 45/20 = 5 5/20 = 5 1/4
a)
1 - 5/9 = 9/9 - 5/9 = 4/9
2 - 2/3 = 1 3/3 - 2/3 = 1 1/3
3 - 5/6 = 2 6/6 - 5/6 = 2 1/6
b)
4 - 2 2/5 = 3 5/5 - 2 2/5 = 1 3/5
2 - 1 5/8 = 1 8/8 - 1 5/8 = 3/8
5 - 3 1/7 = 4 7/7 - 3 1/7 = 1 6/7
c)
6 1/6 - 2 3/4 = 6 2/12 - 2 4/12 = 5 14/12 - 2 4/12 = 3 10/12 = 3 5/6
3 1/4 - 2 2/3 = 3 3/12 - 2 8/12 = 2 15/12 - 2 8/12 = 7/12
4 1/2 - 2 3/5 = 4 5/10 - 2 6/10 = 3 15/10 - 2 6/10 = 1 9/10
d)
3 2/9 - 1 5/6 = 3 4/18 - 1 15/18 = 2 22/18 - 1 15/18 = 1 7/18
5 2/7 - 2 3/4 = 5 8/28 - 2 21/28 = 4 36/28 - 2 21/28 = 2 15/28
2 1/3 - 1 5/7 = 2 7/21 - 1 15/21 = 1 28/21 - 1 15/21 = 13/21
Jaka książka
Podstawówka ,, Wokol Nas "
Część 1 Klasa 6 :> Ułamki