Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 23 h = ____ min
- 712 min = _____ s
- 215 h = _____ min
- 123 min = _____ s
(a)
1 h = 60 min
23 h =
23 x 60 = 40 min
(b)
1 min = 60 s
712 min =
712 x 60 = 35 s
(c)
1 h = 60 min
2
15 h
= (2 x 60) + (
15 x 60)
= 120 + 12
= 132 min
(d)
1 min = 60 s
1
23 min
= (1 x 60) + (
23 x 60)
= 60 + 40
= 100 s
Answer(s): 40, 35, 132, 100