How to Play
- Choose your numbers and difficulty:
- Enter single numbers, comma-separated lists, or ranges using a colon.
Examples:
3 (just 3)
3,6,9 (3, 6, and 9)
5:8 (5, 6, 7, 8)
3,5,7:12 (3, 5, 7, 8, 9, 10, 11, 12)
- Only positive numbers 1-999 are allowed for subtraction.
- You can also use the difficulty buttons to quickly set common number ranges:
Easy: Numbers 1-9 (single digits)
Medium: First number 10-20, second number 1-9
Hard: Numbers 10-99 (double digits)
Extra Hard: Numbers 100-999 (triple digits)
- Decide how many questions you want to answer.
- Click the Start Game button.
- For each question, use the on-screen number pad to enter your answer.
- Press Enter or the green button to submit your answer.
- Try to answer as many as you can before you run out of lives or time!
- Review any missed questions at the end and try again to improve your score.
Tip: You can also use your keyboard to type your answer and press Enter!