Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 56 h = ____ min
- 45 min = _____ s
- 213 h = _____ min
- 112 min = _____ s
(a)
1 h = 60 min
56 h =
56 x 60 = 50 min
(b)
1 min = 60 s
45 min =
45 x 60 = 48 s
(c)
1 h = 60 min
2
13 h
= (2 x 60) + (
13 x 60)
= 120 + 20
= 140 min
(d)
1 min = 60 s
1
12 min
= (1 x 60) + (
12 x 60)
= 60 + 30
= 90 s
Answer(s): 50, 48, 140, 90