🎯 Learning outcomes
- Read time to the minute in 12- and 24-hour formats
- Find time durations and use a calendar
- Make bills and solve money problems with rupees and paise
Before you start: Clock to the hour and half hour; adding money.
📖 Explanation
An hour has 60 minutes and a day 24 hours. In the 24-hour clock, 3:45 p.m. is written 15:45. To find a duration, count on: from 9:40 a.m. to 11:15 a.m. is 20 minutes to 10:00, then 1 hour 15 minutes, total 1 hour 35 minutes.
₹1 = 100 paise. A bill lists items, quantity, rate and amount (quantity × rate); the total is the sum of amounts.
Profit is selling price − cost price when you sell for more than you paid; loss when you sell for less.
An Indian Railways timetable lists the Shatabdi leaving at 06:00 and arriving at 10:45, so the journey takes 4 hours 45 minutes.
✗ 1.30 hours means 1 hour 30 minutes
✓ 1.30 hours means 1.3 hours, which is 1 hour 18 minutes; 1 hour 30 minutes is 1.5 hours.
🧪 Try this activity
Make a bill for a family grocery list: item, quantity, rate, amount and total.
✍️ Question bank with answers
Tap an option to check multiple-choice answers. Open “Answer” or “Marking points” for the others.
-
7:20 p.m. in 24-hour time is
Answer
A. 19:20
Add 12 to p.m. hours: 7 + 12 = 19.
-
How long is it from 10:50 a.m. to 1:10 p.m.?
Answer
D. 2 h 20 min
10:50 to 12:50 is 2 h, then 20 min more.
-
3 pens at ₹12.50 each cost
Answer
D. ₹37.50
12.50 × 3 = 37.50.
-
How many days are there in a leap year?
Answer
366
-
₹5 = ___ paise
Answer
500
-
A shopkeeper buys a bag for ₹400 and sells it for ₹460. Find profit or loss.
Marking points
- Selling price is more
- Profit = 460 − 400 = ₹60
-
Make a bill: 2 kg rice at ₹55/kg, 3 L oil at ₹140/L, 6 eggs at ₹7 each. Find the change from ₹1,000.
Marking points
- Rice ₹110
- Oil ₹420
- Eggs ₹42
- Total ₹572
- Change ₹428
-
A school assembly starts at 8:45 and lasts 25 minutes. When does it end?
Answer
9:10
-
A worker earns ₹350 a day. How much in a 26-day month?
Answer
- 350 × 26
- ₹9,100
🎲 Practice more
A new set of questions every time you press the button. Tap an option to check it and see why. Maths, science, computer and commerce sets get fresh numbers and pictures on every try.
Turn on JavaScript to get practice sets.