Quick answer
How do I calculate the right change?
Subtract the order total from the customer’s actual payment. Multiply each unit price by its quantity before adding different items together. A positive result is change; a negative result means the payment is short. Use the prices shown in your game, not the practice figures on this page.
- Original guide advice · illustrative exercises are not game data
The three numbers to keep separate
Unit price is what one item costs. Order total is the sum of each unit price multiplied by its quantity. Payment is the cash the customer actually gives you. Change = payment − order total. If payment is below the total, there is a shortfall; a negative result is not money you should hand back. Do not infer an item’s price from a customer’s payment.

Worked practice examples
- Example A: one practice item costs ₱8 and the customer pays ₱50. The change is ₱42. A possible arithmetic split is 20 + 20 + 1 + 1, but use only denominations actually available in the game.
- Example B: two practice items at ₱12 each cost ₱24. A ₱50 payment leaves ₱26 change.
- Example C: a ₱35 total with a ₱20 payment is ₱15 short.
- These are invented arithmetic exercises, not an official product price list or a claimed customer order.
Count once, check once
Start with the displayed total rather than memory. Count the coins or notes you select, then check that their sum equals the required change before handing them over. If the sale still does not finish, check the goods and quantity too: a correct change calculation cannot fix a wrong item. The calculator below works only with numbers you enter; it cannot read or control the game.
₱ / Change calculator
Change calculator
Practice tool. Enter the actual values from your game; no preset here is an official price.
Change to return = Customer payment (₱) − Order total (₱)
Sources & updates
- Original guide advice · illustrative exercises are not game data