Making Bills
A bill is simply an organised list of what was bought, how much of each item, the rate (price of one), the amount for each line, and the grand total at the bottom. To make a bill you first work out each line by multiplying the rate by the quantity, then add all the line amounts to get the total. Suppose a child buys 3 pencils at Rs 5 each, 2 erasers at Rs 3 each, and 1 sharpener at Rs 8. The pencils come to 3 x 5 = Rs 15, the erasers to 2 x 3 = Rs 6, and the sharpener to Rs 8, so the bill total is 15 + 6 + 8 = Rs 29. The skill being tested is twofold: multiplying the rate by the quantity for each item, and then adding those products carefully, keeping any paise aligned. Teachers like bill-making because it pulls together multiplication, addition and real-life context in one task, and because checking the total back against the individual amounts naturally teaches verification. When prices include paise, the same rule about lining up the decimal point applies to every line and to the final total.
✅ Solved examples
✏️ Practice — try these, take hints as needed
📝 Topic test — 8 questions
Auto-graded with full solutions; saved to your dashboard. Use the calculator and formula sheet (top-right) any time.
Key Concepts — Quick Reference
Rupees and paise
| Basic equivalence | 1 rupee = 100 paise |
|---|---|
| Decimal form | Rs 45.75 means 45 rupees and 75 paise |
| Paise to rupees | 250 paise = Rs 2.50 |
| Rupees to paise | Rs 3.05 = 305 paise |
Cost, profit and change basics
| Total cost | Total = sum of (price x quantity) for each item |
|---|---|
| Profit | Profit = Selling Price - Cost Price (when SP is more) |
| Loss | Loss = Cost Price - Selling Price (when SP is less) |
| Change | Change = Amount Given - Total Cost |