Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 6 min 39 s = _____ s
- 3 h 25 min = _____ min
- 340 s = 5 min _____ s
- 435 min = _____ h 15 min
(a)
1 min = 60 s
6 min 39 s
= 6 x 60 + 39
= 360 + 39
= 399 s
(b)
1 h = 60 min
3 h 25 min
= 3 x 60 + 25
= 180 + 25
= 205 min
(c)
60 s = 1 min
300 s = 300 ÷ 60 = 5 min
340 s
= 300 + 40
= 5 min 40 s
(d)
60 min = 1 h
420 min = 420 ÷ 60 = 7 h
435 min
= 420 + 15
= 7 h 15 min
Answer(s): 399, 205, 40, 7