CBSE Class 4 Mathematics Tick Tick Assignment Set 01

Question 1. Convert the following:
a) 2 hours = minutes
Answer: 1 hour = 60 minutes
2 hours = \(2 \times 60 = 120\) minutes
In simple words: Multiply the number of hours by 60 to convert them into minutes.

Exam Tip: Remember the basic conversion rule: 1 hour = 60 minutes.

Question 1. b) 4 hours = minutes
Answer: 1 hour = 60 minutes
4 hours = \(4 \times 60 = 240\) minutes
In simple words: Multiply 4 by 60 to get the total minutes.

Exam Tip: Always show the multiplication step clearly to avoid calculation errors.

Question 1. c) 10 days = hours
Answer: 1 day = 24 hours
10 days = \(10 \times 24 = 240\) hours
In simple words: Multiply the number of days by 24 since each day has 24 hours.

Exam Tip: Do not confuse hours in a day with hours in a clock face (12 vs 24).

Question 1. d) 5 minutes 10 seconds = seconds
Answer: 1 minute = 60 seconds
5 minutes = \(5 \times 60 = 300\) seconds
Total seconds = \(300 + 10 = 310\) seconds
In simple words: Convert minutes into seconds and add the remaining seconds.

Exam Tip: Always convert all parts to the smaller unit before adding.

Question 1. e) 6 hours 20 minutes = minutes
Answer: 1 hour = 60 minutes
6 hours = \(6 \times 60 = 360\) minutes
Total minutes = \(360 + 20 = 380\) minutes
In simple words: Convert hours to minutes and add the extra 20 minutes.

Exam Tip: Check your final addition carefully.

Question 2. Change into 24-hour clock time:
a) 7:30 AM =
Answer: 0730 hours
In simple words: Morning times (AM) up to 11:59 AM remain the same in 4 digits without AM.

Exam Tip: 24-hour format always uses four digits and ends with the word "hours".

Question 2. b) 12:55 PM =
Answer: 1255 hours
In simple words: Noon time (12:55 PM) is written as 1255 hours.

Exam Tip: Times from 12:00 noon to 12:59 PM do not require adding 12.

Question 2. c) 8:19 PM =
Answer: 2019 hours
In simple words: For PM times after 12:59 PM, add 12 to the hour part (\(8 + 12 = 20\)).

Question 2. d) 6:00 PM =
Answer: 1800 hours
In simple words: Add 12 to 6 PM (\(6 + 12 = 18\)) to get 1800 hours.
Exam Tip: Drop the colon when writing time in 24-hour format.

Question 3. On 15 May 2007 Seema went to buy butter. It was written on the packet “Best before 180 days from the date of packing.” If the date of packing was 15/01/07, then find out:
i) In which month was the butter packed?
Answer: January (Month 01)
In simple words: The date of packing is given as 15/01/07, where 01 stands for January.

Exam Tip: Read the date format DD/MM/YY carefully.

Question 3. ii) Which month will it be 180 days after 15/01/07?
Answer: 180 days equals 6 months (\(180 \div 30 = 6\)).
Counting 6 months after January (01):
January + 6 months = July (07)
The date will be 15/07/07, which is July.
In simple words: 180 days is exactly 6 months, so adding 6 months to January brings us to July.

Exam Tip: Assume each month has 30 days unless specified otherwise for basic calendar problems.

Question 3. iii) Can Seema eat it on 15th May 2007?
Answer: Yes, Seema can eat it on 15th May 2007.
In simple words: May 2007 comes before July 2007, so the butter is still within its 180-day expiry period.

Exam Tip: Compare the target date with the expiry date calculated in the previous sub-part.

Question 4. Sikandar started dreaming of a cruise at 12:15 AM. He dreamt for 1 hour 25 minutes. At what time did his dream end?
Answer: Start time = 12:15 AM
Duration = 1 hour 25 minutes
Adding hours: 12:15 + 1 hour = 1:15 AM
Adding minutes: 1:15 + 25 minutes = 1:40 AM
End time = 1:40 AM
In simple words: Add 1 hour and 25 minutes to the start time.

Exam Tip: Add hours to hours and minutes to minutes separately.

Question 5. A hockey match started at 3:40 PM and ended at 5:05 PM. How long did the match last?
Answer: Start time = 3:40 PM
End time = 5:05 PM
Time from 3:40 PM to 4:00 PM = 20 minutes
Time from 4:00 PM to 5:00 PM = 1 hour
Time from 5:00 PM to 5:05 PM = 5 minutes
Total duration = 1 hour + 20 minutes + 5 minutes = 1 hour 25 minutes
In simple words: Count the time needed to reach the next full hour, add the hours in between, and add the remaining minutes.

Question 6. Draw the top, side and front view of the following:
A) Funnel
Answer:
- Top view: Two concentric circles (a small circle inside a larger circle).
- Side view: A triangle shape with an open bottom stem or an inverted cone.
- Front view: Same as the side view, showing a cone shape with a narrow pipe at the bottom.
In simple words: The top looks like rings, while the front and side look like a triangle with a stick at the bottom.
Exam Tip: Draw clear 2D outlines for each perspective.

Question 6. B) Glass
Answer:
- Top view: Two concentric circles (rim of the glass and bottom base).
- Side view: A trapezoid or rectangle wider at the top and narrower at the bottom.
- Front view: Identical to the side view.
In simple words: A drinking glass looks like circles from above and a trapezoid from the side or front.

Exam Tip: Label each view clearly as Top, Side, and Front.

Question 6. C) Railway Track
Answer:
- Top view: Two parallel lines crossed by multiple short perpendicular lines (sleepers).
- Side view: A long horizontal straight line.
- Front view: Two small dots or short vertical lines representing the ends of the rails.
In simple words: From above you see the parallel tracks and wooden ties, from the side a straight line, and from the front just the ends.

Exam Tip: Visualizing 3D objects from different angles helps in understanding spatial geometry.