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Practice adding numbers, one island at a time.
Practice addition with numbers 1–12. Solve questions to hop between islands, with helpful hints. No time limit. Save your best error-free time.
Practice adding numbers, one island at a time. Practice addition with numbers 1–12 through an island adventure. Choose a challenge from 1–12 or practice a mixed set. Each correct answer moves your adventurer forward. Hints explain mistakes. Finish the 12 questions, then try again to complete the round without any errors. No account or installation is needed.
Choose a number to add from 1–12, or mix them all. Practice addition with numbers 1–12 with 12 questions to hop between islands. Choose with a mouse or touch, use Tab and Enter, or press 1–4 for the answer positions. Incorrect answers get hints. Complete the round, then try again for an error-free run. There is no time limit. Your fastest error-free time is saved separately for each challenge and game on this device. The game is in English.
Your best error-free time for each challenge and game is saved in this browser. There are no online leaderboards.
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