Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 min 4 s = _____ s
- 2 h 5 min = _____ min
- 150 s = 2 min _____ s
- 499 min = _____ h 19 min
(a)
1 min = 60 s
9 min 4 s
= 9 x 60 + 4
= 540 + 4
= 544 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
150 s
= 120 + 30
= 2 min 30 s
(d)
60 min = 1 h
480 min = 480 ÷ 60 = 8 h
499 min
= 480 + 19
= 8 h 19 min
Answer(s): 544, 125, 30, 8