A bank deposit slip

In your book, Maths Mela (Chapter 10), the children of a school in Chittoor are planning a Baal Mela. Raju, Rani and Roja have raised money, and they will put it in the School Panchayat Bank. To do that, each one fills in a deposit slip.

A deposit slip has a row for each kind of note or coin: ₹500, ₹100, ₹50, ₹10, ₹5, ₹2 and ₹1. For each row we write how many notes or coins there are, and the amount. Raju has 3 notes of ₹500, which is 3 × 500 = ₹1500. He has 3 notes of ₹100 (₹300), 2 notes of ₹50 (₹100), 14 notes of ₹10 (₹140) and 1 coin of ₹5 (₹5).

Then we add the amounts: ₹1500 + ₹300 + ₹100 + ₹140 + ₹5 = ₹2045. That is exactly Raju's money. The slip also asks for the amount in words: two thousand and forty-five rupees.

The same amount can be made in different ways. Roja has ₹1240. She could have 2 notes of ₹500, 2 of ₹100 and 4 of ₹10. Or 1 note of ₹500, 7 of ₹100 and 4 of ₹10. Both make ₹1240, so both slips would be right.