Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 min 56 s = _____ s
- 2 h 5 min = _____ min
- 160 s = 2 min _____ s
- 437 min = _____ h 17 min
(a)
1 min = 60 s
1 min 56 s
= 1 x 60 + 56
= 60 + 56
= 116 s
(b)
1 h = 60 min
2 h 5 min
= 2 x 60 + 5
= 120 + 5
= 125 min
(c)
60 s = 1 min
120 s = 120 ÷ 60 = 2 min
160 s
= 120 + 40
= 2 min 40 s
(d)
60 min = 1 h
420 min = 420 ÷ 60 = 7 h
437 min
= 420 + 17
= 7 h 17 min
Answer(s): 116, 125, 40, 7