Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 12 28 to 21 28 = _____ h
- 4:24 p.m. to 7:24 p.m. = _____ h
- 04 00 to 08 35 = _____ min
- 3:35 a.m. to 7:40 a.m. = _____ min
(a)
From 12 28 to 21 28 = 9 h
(b)
From 4:24 p.m. to 7:24 p.m. = 3 h
(c)
From 04 00 to 08 00 = 4 h
From 08 00 to 08 35 = 35 min
From 04 00 to 08 35 = 4 h 35 min
1 h = 60 min
4 h = 4 x 60 = 240 min
4 h 35 min = 240 + 35 = 275 min
(d)
From 3:35 a.m. to 7:35 a.m. = 4 h
From 7:35 a.m. to 7:40 a.m. = 5 min
From 3:35 a.m. to 7:40 a.m. = 4 h 5 min
1 h = 60 min
4 h = 4 x 60 = 240 min
4 h 5 min = 240 + 5 = 245 min
Answer(s): 9, 3, 275, 245