Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 4 min 17 s = _____ s
- 5 h 20 min = _____ min
- 275 s = 4 min _____ s
- 365 min = _____ h 5 min
(a)
1 min = 60 s
4 min 17 s
= 4 x 60 + 17
= 240 + 17
= 257 s
(b)
1 h = 60 min
5 h 20 min
= 5 x 60 + 20
= 300 + 20
= 320 min
(c)
60 s = 1 min
240 s = 240 ÷ 60 = 4 min
275 s
= 240 + 35
= 4 min 35 s
(d)
60 min = 1 h
360 min = 360 ÷ 60 = 6 h
365 min
= 360 + 5
= 6 h 5 min
Answer(s): 257, 320, 35, 6