Page 219 - Math Genius C4

E:\Working\Orange_Education\Math_Genius_4\Open_Files\Chap-11
\\September 30, 2025 12:00 PM Bharat Arora P-9 Reader _________________________ Date: ___________________74

Chapter assessment

1. tick () the correct option.

(a) 8 hours 50 minutes = ____________ minutes.
(i ) 470 (ii ) 500 (iii ) 530 (iv) 600

(b) How many seconds are there in 1 hour?
(i ) 60 (ii ) 360 (iii ) 1800 (iv) 3600
(c) Which of the following gives the number of minutes in a day?

(i ) 24 (ii ) 24 × 60 (iii ) 60 × 60 (iv) 24 × 60 × 60
(d) 8 days 8 hours = ____________ hours.
(i ) 200 (ii ) 224 (iii ) 250 (iv) 300

(e) What time was it 3 hours 30 minutes before 12 noon?
(i ) 8:30 a.m. (ii ) 8:40 a.m. (iii ) 9:30 a.m. (iv) 9:30 p.m.
2. An athlete completed a 5000 m race in 11 minutes 38 seconds and he broke the

world record by 48 seconds. What was the world record?
3. What time is 2 hours 25 minutes before 6:10 p.m.?

4. Isha woke up at 6:30 a.m. after sleeping for 8 hours 45 minutes. At what time
did she go to bed?
5. Gyan went for a movie at 7:15 p.m. and returned 3 hours 15 minutes later. At
what time did he return?

6. Jasmin takes 25 minutes to have her breakfast, 30 minutes to have her lunch
and 24 minutes to have her dinner. What is the total time she spends eating?

7. Anaya plays for 2 hours 15 minutes daily. Today she went to play at 4:10 p.m.
At what time should she return?
8. Rohan’s family went on a trip on 17th May 2025 and returned on 12th July
2025. How many days did they spend on the trip?

Mental Maths Critical Thinking
The time taken by each team in two rounds of a 15,000 m walk is given
below. Rank the teams from fastest to slowest based on the total time taken in both
rounds.

team A B C d
round-1 1 h 45 min 10 s 1 h 55 min 19 s 2 h 39 min 10 s 1 h 49 min 36 s
round-2 2 h 14 min 53 s 2 h 15 min 10 s 2 h 55 min 19 s 2 h 10 min 26 s

total time
rank

Mathematics-4 217