Question

1,75h = ........min
1 i 1/6min = ........ s
1,5km = .......... m
0,5dm =.........cm
20dag =...........g
1 i 1/8kg =..........g
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Answer 1

1,75h = 1 i 3/4 h = (60 + 45)min = 105min
1 i 1/6min = (60 + 10)s = 70ss 
1,5km = 1,5 * 1000m = 1500m 
0,5dm = 0,5 * 10cm = 5cm
20dag = 20 * 10g = 200g 
1 i 1/8kg =1,125kg = 1,125 * 1000g = 1 125g