Best CSM 820 alternatives: apps like CSM 820-605 Exam Prep 2026

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Mental Math - Kalc by LMT Digital Creations

Tables fractions % all ages

Strong Contender

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Sharpen your mental math skills with daily practice. This app uses spaced repetition to help you master concepts like fractions, percentages, and algebra. It offers two modes for flexible learning and provides real-life examples of how math is used every day.

Soroban: Mental Math Abacus by Shweta Kumari

Improve Math Speed & Focus

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Speak Bosnian with your nana

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Prepare exam 1400 words & more

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Soroban: Japanese Abacus Math

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