Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 12 h = ____ min
- 512 min = _____ s
- 315 h = _____ min
- 212 min = _____ s
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
(b)
1 min = 60 s
512 min =
512 x 60 = 25 s
(c)
1 h = 60 min
3
15 h
= (3 x 60) + (
15 x 60)
= 180 + 12
= 192 min
(d)
1 min = 60 s
2
12 min
= (2 x 60) + (
12 x 60)
= 120 + 30
= 150 s
Answer(s): 30, 25, 192, 150