Speed calculation · lesson 4 of 25 · free

Money in a flash: rupees and paise — Speed Calculation

Money sums with a decimal point look hard, but they are two easy sums in one: rupees and paise. 100 paise make ₹1, so when the paise go over 100 you carry ₹1, and when there are not enough paise you change ₹1 into 100 paise.

The fast method

Split the money — “work out the rupees and the paise separately, then join them”

  1. Add or subtract the rupees.
  2. Add or subtract the paise. 100 paise or more? Carry ₹1.
  3. Not enough paise to take away? Change ₹1 into 100 paise first.
  4. Write the answer without extra zeros: ₹12.50 is typed as 12.5.

Use it for: Shopping bills, pocket money, change from a shop, and decimals in Class 5–7.

Worked example: ₹63.40 − ₹18.75 = 44.65

  1. 40 paise is less than 75: change ₹1 into 100 paise → ₹62 and 140 paise.
  2. Rupees: 62 − 18 = 44. Paise: 140 − 75 = 65.
  3. Together: ₹44.65.

Check: ₹44.65 + ₹18.75 = ₹63.40 ✓

✏️ Practice

Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.

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🏁 Lesson 4 test

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🖨️ Adding and Subtracting Money Worksheet

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