Math Lab
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Money Total in Rupees

Money · Class III

Count coins and notes to find the total.

3
type a value
010
4
type a value
010
2
type a value
010
Live values
  • Total (Rs.)54
Live readout
Total (Rs.)54
10-rupee notes3
5-rupee coins4
2-rupee coins2

Formulas in this lab

  • Total (Rs.)
    10x+5y+2z10x + 5y + 2z
Tip: Group same-value coins, then add the groups!

Frequently asked questions

▶How do we add coins and notes?

Count coins and notes of the same value first, then add them. Two 10-rupee notes plus three 5-rupee coins make 20 plus 15, which is 35 rupees. The rupee symbol shows the total.

▶How do I use this money lab?

Pick how many of each note and coin you have using the sliders. The lab shows your money on a tray and writes the total in rupees. Try mixing notes and coins to reach exactly 100.

▶When do we add money at home?

Counting your Diwali shagun, or finding the total cost of groceries at the kirana shop, or adding pocket money saved in a piggy bank. Every shopping trip is a chance to practise.

▶Tip for counting money

Always count the biggest notes first, then smaller notes, then coins. So count 100-rupee notes, then 50s, then 20s and 10s, then coins. This makes the total quicker and you make fewer mistakes.