Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 7 min = _____ s
- 9 h = _____ min
- 120 s = _____ min
- 180 min = _____ h
(a)
1 min = 60 s
7 min
= 7 x 60
= 420 s
(b)
1 h = 60 min
9 h
= 9 x 60
= 540 min
(c)
1 min = 60 s
120 s
= 120 ÷ 60
= 2 min
(d)
1 h = 60 min
180 min
= 180 ÷ 60
= 3 h
Answer(s): 420, 540, 2, 3