3.2 a) 1 i 1/2 razy 7 5 /7 razy 14/17 8 i 1/2 razy 2/5 7 i 1/2 razy 2/5 b) 8/9 :6 14/15 : 7/9 3 i 1/3 : 5/6 4 i 1/5 : 2 i 1/2 c) 8,4 raz 0,9 3,45 razy 1,6 5,28 razy 0,25 0,013 razy 11,4 d) 1,062 : 0,3 0,1215:0,05 7,6:0,019 4,368:1,68 Dam naj prosze o helpa!!!.
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a)
1 1/2 * 7 = 3/2 * 7/1= 21/2= 10 1/2
5/7 * 14/7= 5/1 * 2/7= 10/7= 1 3/7
8 1/2 * 2/5= 17/2 * 2/5= 17/1 * 1/5= 17/5= 3 2/5
7 1/2 * 2/5= 15/2 * 2/5= 3/1 * 1/1= 3
b)
8/9 : 6= 8/9 * 1/6= 8/54= 4/27
14/15 : 7/9= 14/15 * 9/7= 2/5 * 3/1= 6/5= 1 1/5
3 1/3 : 5/6= 10/3 * 6/5= 2/1 * 2/1=4
4 1/5 : 2 1/2= 21/5 : 5/2= 21/5 * 2/5= 42/25= 1 17/25
c)
8,4 * 0,9= 7,56
3,45 * 1,6= 5,52
5,28 * 0,25= 1,32
0,013 * 11,4= 0,1482
d)
1,062 : 0,3= 3,54
0,1215 : 0,05= 2,43
7,6 : 0,019= 400
4,368 : 1,68= 2,6