🏠

🧮 Order Checker

⭐ 0

I can choose the calculator entry for a total cost.

Audio is unavailable on this device.

📖 Learn first

Choose the keys in the right order: multiply for equal items, then add extra costs.

Example: 5 books at $200 plus $300 delivery

  1. Books: 5 × 200
  2. Add delivery: + 300
  3. Entry: 5 × 200 + 300

Questions get harder as you go. The last ones ask you to type the answer.