Keentune
Adaptive skill practice — find your level, get sharper.
Mental Math practice Quick, in your head: what is 25 × 48?
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No signup · first signal after 5 answers · your score at session end
Fast arithmetic and number sense
Quick calculation and estimation you can do in your head — addition, multiplication, squares, and percentages — that builds real number sense.
• Meets you at your level — never too easy, never too hard.
• Adapts every question to how you’re doing.
• Tracks your level over time. Skill practice, not a test.
New here? Read the Mental Math guide A free 8-minute primer — the mental model, the mistakes beginners make, and what to practice first.
Curriculum 43 concepts across 11 chapters, from foundations through advanced practice — each one a concept the adaptive question bank can teach and test.
C. Multiplying in your head 7
D. Dividing in your head 4
E. Divisibility and remainders 3
H. Fractions of a quantity 3
View the full curriculum →
Keentune is not affiliated with or endorsed by the organizations whose documentation informs these maps.
Start practicing — it’s free
No signup · first signal after 5 answers · your score at session end
Explore all skills on Keentune
Mental Math on exams Mental Math is one of the skills tested on these exams. Each prep page lays out what the real test covers and where this skill fits.
All exam, test, and product names and trademarks are the property of their respective owners and are used here for identification and reference only. Keentune is independent study practice — not affiliated with, authorized, or endorsed by any of these organizations.
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