How many numbers can you make?
Form 4-digit numbers from given digits, discover the greatest and smallest, and learn the secret rule!
Ch. 1. Knowing Our Numbers 1.2. Comparing Numbers 1.2.1. Medium
Instructions
- Number Factory: You are given 4 unique digits. Use them to form as many 4-digit numbers as you can — each digit used exactly once per number.
- Greatest & Smallest: Find the greatest and smallest 4-digit numbers from the same digits.
- Discover the Rule: Learn how to always find the greatest and smallest numbers instantly.
- Quick-Fire Practice: Apply the rule with new sets of digits — race against the clock!
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Operational Instructions
- Tap a digit card to place it in the next empty slot.
- Tap a placed digit to remove it back to the pool.
- Click Submit to check your number.