Time 1
In this article, we are going to learn about Time. The learning objectives are:
- Telling time to the minute
- Converting time
Topic Recap:
Telling time to 5 minutes
A clock is used to tell the time.
The units for measuring time are hour (h) and minute (min).
Each number on a clock represents an interval of five minutes.
Use of am & pm
‘am’ is used to refer to timings before noon/in the morning.
‘pm’ is used to refer to timings in the afternoon and/or night.
Example:
Fill in the blanks with either am or pm.
- Ricardo eats his breakfast at 8:30 __________.
- Shirley likes to go for an early morning jog at 7:00 __________.
- After dinner, Melissa watches her favourite cartoon at 8:00 __________.
Answer:
- Ricardo eats his breakfast at 8:30 am.
- Shirley likes to go for an early morning jog at 7:00 am.
- After dinner, Melissa watches her favourite cartoon at 8:00 pm.
Question 1:
The clock below shows the time Jason wakes up every morning.
What time does Jason wake up every morning?
- 6:45 am
- 7:45 pm
- 9:35 am
- 6:45 pm
Solution:
The hour hand is between 6 and 7. This means that the time is after 6 o’clock. The minute hand is pointing to 9. This means that the time is 6:45.
6:45 in the morning is 6:45 am.
Answer:
(1) 6:45 am
Question 2:
The clock below shows the time when Mrs Lee started making dinner.
What time did Mrs Lee start preparing dinner?
- 5.15 am
- 5:15 am
- 5:15 pm
- 6:15 pm
Solution:
The hour hand is between 5 and 6. This means that the time is after 5 o’clock. The minute hand is pointing to 3. This means that the time is 5:15.
5:15 in the afternoon is 5:15 pm.
Answer:
(3) 5.15 pm
1. Telling Time To Minute
Every number on the clock represents a time interval of 5 minutes.
Every line in between the numbers represents a time interval of 1 minute.
The time on this clock will be 11:36.
Follow the clock below.
Follow the clock below.
Question 1:
Look at the picture below.
Hannah is doing her homework at __________ pm.
- 3:49
- 4:49
- 4:50
- 5:49
Answer:
(2) 4:49
Question 2:
Look at the picture below.
The performance ended at __________ pm.
- 7:22
- 7:23
- 8:22
- 8:23
Answer:
(3) 8:22
Question 3:
The clock below shows the time Mary had her breakfast.
What time did Mary have her breakfast?
- 7:13 am
- 7:14 am
- 7:15 am
- 7:23 am
Answer:
(1) 7:13 am
2. Converting Time
To convert hours and minutes to minutes,
we need to remember that there are 60 minutes in 1 hour.
For example,
- \(1 \text{ h } = 60 \text{ min }\)
- \(2 \text{ h } = 120 \text{ min }\)
- \(\begin{align}\\ 1 \text{ h } 20 \text{ min } &= 60 \text{ min } + 20 \text{ min } \\ &=80 \text{ min } \end{align}\)
Question 1:
Kenny took \(2 \text{ h } 25 \text{ min }\) to reach the airport by train. How long did Kenny take to reach the airport in minutes?
Solution:
Break \(2 \text{ h } 25 \text{ min }\) into hours and minutes.
\(\begin{align} 2 \text{ h } 25 \text{ min } &= 2 \text{ h } + 25 \text{ min } \\[2ex] &= 120 \text{ min } + 25 \text{ min } \\[2ex] &= 145 \text{ min } \end{align}\)
Answer:
\(145\text{ min }\)
Question 2:
Write the following in minutes.
- 60 minutes
- 180 minutes
- 240 minutes
- 300 minutes
Solution:
\(\begin{align} 5 \text{ h } &= 1 \text{ h } + 1 \text{ h } + 1 \text{ h } + 1 \text{ h } + 1 \text{ h } \\[2ex] &= 60 \text{ min } + 60 \text{ min } + 60 \text{ min } + 60 \text{ min } + 60 \text{ min }\\[2ex] &= 300 \text{ min } \end{align} \)
Answer:
(4) 300 minutes
Question 3:
Write the following in minutes.
- 50 minutes
- 60 minutes
- 100 minutes
- 110 minutes
Solution:
\(\begin{align} 1 \text{ h } 50 \text{ min } &= 60 \text{ min } + 50 \text{ min } \\[2ex] &= 110 \text{ min } \end{align}\)
Answer:
(4) 110 minutes
Question 4:
Write the following in minutes.
- 240 minutes
- 245 minutes
- 285 minutes
- 295 minutes
Solution:
\(\begin{align} 4 \text{ h } 45 \text{ min } &= 4 \text{ h } + 45 \text{ min } \\[2ex] &= 240 \text{ min } + 45 \text{ min }\\[2ex] &= 285 \text{ min } \end{align}\)
Answer:
(3) 285 minutes
Question 5:
The movie ‘Musical Return of Gitan’ lasted for \(140 \text{ min}\). How long was the movie in hours and minutes?
Solution:
Break \(140 \text{ min}\) into hours and minutes.
\(\begin{align} 140 \text{ min } &= 120 \text{ min }+ 20 \text{ min } \\[2ex] &= 2 \text{ h }+ 20 \text{ min } \\[2ex] &= 2 \text{ h } 20 \text{ min } \end{align}\)
Answer:
2 h 20 min
Question 6:
Look at the following.
- 1 h
- 1 h 2 min
- 1 h 12 min
- 1 h 20 min
Solution:
\(\begin{align} 62 \text{ min } &= 60 \text{ min }+ 2 \text{ min }\\[2ex] &= 1 \text{ h } + 2 \text{ min }\\[2ex] &= 1 \text{ h } 2 \text{ min } \end{align} \)
Answer:
(2) 1 h 2 min
Question 7:
Write in hours and minutes.
- 2 h 5 min
- 3h 5 min
- 3 h 15 min
- 4 h 25 min
Solution:
Break \(185 \text{ min}\) into hours and minutes.
\(\begin{align} 185 \text{ min } &= 60 \text{ min }+ 60 \text{ min }+ 60 \text{ min }+ 5 \text{ min }\\[2ex] &= 1 \text{ h }+ 1 \text{ h }+ 1 \text{ h }+ 5 \text{ min } \\[2ex] &= 3 \text{ h }+ 5 \text{ min }\\[2ex] &= 3 \text{ h } 5 \text{ min } \end{align} \)
Answer:
(2) 3 h 5 min
Question 8:
Write in hours and minutes.
- 6 h 45 min
- 6 h 55 min
- 7 h 45 min
- 7 h 55 min
Solution:
Break \(475 \text{ min}\) into hours and minutes.
\(\begin{align} 475 \text{ min } &= 60 \text{ min } + 60 \text{ min } + 60 \text{ min } + 60 \text{ min } + 60 \text{ min } + 60 \text{ min } + 60 \text{ min } + 55 \text{ min } \\[2ex] &= 1 \text{ h } + 1 \text{ h } + 1 \text{ h } + 1 \text{ h } + 1 \text{ h } + 1 \text{ h } + 1 \text{ h } + 55 \text{ min }\\[2ex] &= 7 \text{ h } + 55 \text{ min }\\[2ex] &= 7 \text{ h } 55 \text{ min } \end{align}\)
Answer:
(4) 7 h 55 min
In this article, we have learnt about Time:
- Telling time to the minute
- Converting time