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42/100=21/50
28/60=7/5
10/40=5/20=1/4
80/150=8/15
7.
b) 5/60=1/12
c) 90/100=9/10
d) 15/60=1/4
e) 200/1000=1/5
f) 4/10=2/5
8.
8/32=1/4
40/32=1 1/4
2/4=1/2
6/4= 1 1/2
24/4=6
9.
TAK
10.
30:40, 9:12, 60/80, 30/40
11.
a) 2/3=6/9
3/5=12/20
b) 5/4=25/20
7/6=28/24
c) 11/9=33/27
1/2=9/18
d) 3/8=9/24
4/3=16/12
e) 2/5=10/25
9/7=27/21
12.
2/3=10/15 kolorujesz 10 kwadratów
3/4=9/12 kolorujesz 9
3/7=12/28 kolorujesz 12 kwadratów
5/8=15/24 kolorujesz 15
Miałam to dziś w szkole a 13 ćw. mam na zadanie