Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 23 h = ____ min
- 14 min = _____ s
- 114 h = _____ min
- 213 min = _____ s
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
(b)
1 min = 60 s
14 min =
14 x 60 = 15 s
(c)
1 h = 60 min
1
14 h
= (1 x 60) + (
14 x 60)
= 60 + 15
= 75 min
(d)
1 min = 60 s
2
13 min
= (2 x 60) + (
13 x 60)
= 120 + 20
= 140 s
Answer(s): 40, 15, 75, 140