Think fast.
Answer cleanly.

Mental-math practice built for speed. Write each answer with Apple Pencil or use the keypad. No calculator and no written work.

Answers are graded at the end.

There are no pop-ups or corrections during a round—just answer, enter, and keep moving.

CONTEST PRACTICE80 questions

Full round

Race the 10-minute clock. When time expires, the round submits automatically.

SKILL PRACTICE20 questions

Quick drill

Twenty untimed questions, with extra practice from skills missed earlier in this tab.

Practice adapts while this page stays open. Starting a new browser session begins fresh.

Clever Clatter
1 / 80
10:00
Addition

48 + 27 = ?

No checking during the round.
Clever Clatter
Correct answers
0 / 20
0% accuracy

Round complete

Review the skills below, then try another round.

Skill breakdown

Missed questions

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