ColumnAddSub vs Trachtenberg Kids

An app for parents/mentors to engage with young learners to demonstrate and practice the process of column addition and subtraction. Helps learners to understand the process by swiping the images in the correct order. Develops deeper understanding by using place value counters prior to the abstract numerals. Provides practice of the process by completing the examples and sets reasoning problems through the missing digits challenge.

Trachtenberg Kids turns multiplication into a superpower. Using the famous Trachtenberg system — the "speed math" once taught to engineers — your child learns to multiply big numbers in their head, no calculator needed. Every lesson reveals a secret, walks your child through it step by step, then builds confidence with guided practice, free play, and a 60-second Speed Round. Friendly mascots and a "Show Off" mode keep them coming back. WHAT YOUR CHILD LEARNS • ×11 and ×12 • The halving family: ×5, ×6, ×7 • The complement family: ×9, ×8, ×4, ×3 • How to multiply 2-digit numbers in their head, left to right HOW IT WORKS • Watch the trick revealed with a fun animation • Practice with step-by-step hints, then solo • Beat the clock and build a streak • Earn stars and unlock the next trick MADE FOR FAMILIES • One family account, a profile per kid — progress syncs across devices • A grown-up area protected by a parent PIN • No ads. No chat. No tracking. FREE & PREMIUM The ×11 trick is free. Unlock every trick with Trachtenberg Kids Premium — an auto-renewable subscription. It renews automatically unless cancelled at least 24 hours before the period ends; manage or cancel anytime in Settings > Apple ID > Subscriptions. Privacy Policy: https://trachtenberg-kids.pages.dev/legal/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/