Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 12 h = ____ min
- 16 min = _____ s
- 212 h = _____ min
- 214 min = _____ s
(a)
1 h = 60 min
12 h =
12 x 60 = 30 min
(b)
1 min = 60 s
16 min =
16 x 60 = 10 s
(c)
1 h = 60 min
2
12 h
= (2 x 60) + (
12 x 60)
= 120 + 30
= 150 min
(d)
1 min = 60 s
2
14 min
= (2 x 60) + (
14 x 60)
= 120 + 15
= 135 s
Answer(s): 30, 10, 150, 135