All experiments
Math · Ages 7+
Give the Correct Change
Can you run the shop counter?
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What is this experiment about?
A customer hands you money for an item — your job is to work out and hand back the exact right change.
Questions kids ask
- How do you calculate change?
- Subtract the price of the item from the amount the customer paid — the result is the change you owe them.
- Why does this use Indian currency?
- Practicing with real denominations like ₹10 and ₹50 notes makes the math feel useful and familiar.
- What if I give the wrong change?
- You'll get a gentle hint so you can try again — there's no pressure, just practice.
