Question

1/2h =.......s
3h =.......s
0,02 h =.....s
15 min =......s
0,25 min =....s
15 min =.......h
180 s =.......h
18 s =.......min
30 min =........h
1/4 h =.......min

Proszę o POMOC! ;3

Answer 1

1/2 h = 1800 s
3h = 10800 s
0,02h = 72 s
15 min = 900 s
0,25 min = 15 s
15 min = 1/4 h
180 s = 3 min = 0,03 h
18s = 0,3 min
30 min = 1/2 h
1/4 min = 15 min

licze na naj ;)

Answer 2

1/2 h = 1800 s
3h = 10800 s
0,02 h = 60min * 0,02 = 3600 s * 0,02 = 72 s
15 min = 900 s
0,25 min = 15 s
15 min = 0,25 h
180 s = 3 min = 0,05 h
18 s = 0,3 min
30 min = 0,5 h
1/4 h = 15 min