# Question Bank for 4th Class Mathematics on Time

Posted by **Olympiad Tester** on

Math Practice Questions with Answers

## Math Practice Questions with Answers

**Question 1:** Mr Kapoor is 31 years old. His son is 4 years old. In how many years' time will he be 4 times as old as his son?

**Answer:** 5 years

**Question 2:** Eli is 8 years old and his mother is 30 years older than him. How old will Eli be when his mother is thrice his age?

**Answer:** 15 years old

**Question 3:** Roshan spent 1/3 h practicing on the piano every day. How much time did he spend practicing on the piano every week? Give the answer as a mixed number.

**Answer:** 2 1/3 hours

**Question 4:** The sum of Biren's age and his younger brother's age is 26. The product of their ages is 144. What is Biren's age in 20 years' time?

**Answer:** 38 years old

**Question 5:** Dev took 2 h to complete his Mathematics practice paper and 13 of that time to write a composition. If Dev started work at 9.20 a.m., at what time did he finish all the tasks if he did not stop to rest? (Give your answer in the 24-hour clock.)

**Answer:** 13:45 (1:45 p.m.)

**Question 6:** Jill's lesson started at 1.15 p.m. and ended at 2.45 p.m. How long was the lesson in hours and minutes?

**Answer:** 1 hour 30 minutes

**Question 7:** Amit took 1 3/4 h to assemble his model aeroplane. Vikas took 2/3 h to assemble his model aeroplane. How much time did they take altogether to assemble the two aeroplanes? (Express your answer as a fraction in its simplest form)

**Answer:** 2 5/12 hours

**Question 8:** An MRT train took 45 minutes to travel from Lakemarket Station to Woodlands Station. If left Lakemarket Station at 11:37. What time did the train arrive at Woodlands Station?

**Answer:** 12:22 (12:22 p.m.)

**Question 9:** A plane departed from Singapore at 21:50 on Monday. It landed in Bangkok at 02:30. How long was the flight?

**Answer:** 4 hours 30 minutes

**Question 10:** When the minute hand of a clock moves from 6:20 p.m. to 6:35 p.m., it has moved __________ degrees.

**Answer:** 90 degrees