割引率計算　練習アプリ vs MathIt

【割引率の計算練習アプリ】 　①元値と、②割引率から「値引き後の金額」を 　簡単にイメージできるように４択クイズとして練習しよう！ 　という目的のアプリです。計算の脳トレとしてもご活用可能です。 【レベル分け】 　「かんたん」では１０％区切りの問題と、 　1万未満の金額が表示されます。 　慣れてきたら「ふつう」レベルもご活用ください。 【割引電卓付き】 　通常の電卓よりも簡単に割引率が出せるように、 　割引に特化した電卓ツールも入ってますので 　日々の買い物にご活用ください。

Learn and practice math the fun way. MathIt builds a daily math plan just for you - step-by-step lessons, 113 practice games, logic puzzles, and fast multiplayer rounds, all in one app. Perfect for kids learning times tables, students drilling mental math, and adults who want a daily brain workout. YOUR DAILY MATH PLAN Answer a few quick questions and MathIt builds a plan around your grade and chosen topics. Every day you get five focused drills - short enough to finish, useful enough to matter. Keep your streak alive and watch each skill level up. LESSONS & MENTAL-MATH TRICKS 29 step-by-step lessons teach the mental-math tricks that make arithmetic fast: the x9 trick, x11 shortcuts, x25, halve-and-double, making a ten, left-to-right addition and more. Learn the trick, then drill it straight away. Custom Practice lets you pick the exact operations and number range you want to master - so you practice the math facts that matter to you. 113 MATH GAMES, K TO 7 Browse a full library of 113 math games sorted by topic and grade - counting and number sense, addition, subtraction, multiplication, division, fractions, percents, and measurement. Filter from kindergarten to 7th grade, or save your favorites. TIMES TABLES CAMPAIGN Work through every times table from 2x to 12x and see exactly which facts you have mastered and which still need work. A mastery grid turns times-tables practice into a goal you can finish. LOGIC PUZZLES & BRAIN TEASERS Brain teasers with a hidden rule to figure out: mini sudoku, cage math, balance scales, number pyramids, magic squares, matchstick puzzles, sequences, and more. Real brain training that rewards reasoning, not just fast recall. ADAPTIVE DIFFICULTY Every game tracks how fast and how accurately you answer, then levels up when you are flying and eases off when you are struggling. Practice always lands at the right level. PLAY WITH FRIENDS When you want company, challenge 2-5 friends to real-time math battles. Create a room or join one with a code, share the link or QR code, and race to beat the clock. Rounds last 30 seconds - the fastest correct answer earns 2 points, the second earns 1, and wrong answers carry no penalty. Choose Easy, Medium, or Hard, climb the global leaderboard, and track your wins on your profile. KEY FEATURES - A personalized daily math plan with streaks - 29 mental-math lessons that teach real tricks - 113 math games from kindergarten to 7th grade - Logic puzzles and brain teasers with a hidden rule - Times tables campaign with per-fact mastery tracking - Adaptive difficulty that follows your pace - Self-paced math drills with Custom Practice - Real-time multiplayer: play with 2-5 friends - Global leaderboard with country flags - Available in 33 languages - Sign in with Apple, Google, email, or play as a guest Whether you want to sharpen your skills, drill the times tables, take a lesson, or solve a puzzle, MathIt turns math practice into a habit. Download now and start practicing! MATHIT PRO - AD-FREE SUBSCRIPTION MathIt is free to use, but you can remove all ads and support development with a MathIt Pro subscription. MathIt Pro Pricing & Terms: - Monthly: $9.99/month - Yearly: $39.99/year * Prices are in USD. Actual charges may be converted to your local currency. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. No cancellation of the current subscription is allowed during the active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Terms of Use: https://mathit.app/terms.html Privacy Policy: https://mathit.app/privacy.html