気持ち良い計算尺 vs まいにち5分！そろばん練習

気持ち良い操作感にこだわった、新感覚の計算尺アプリです。 目盛を指で滑らせると、1・1.5・2・2.5…と0.5刻みで吸い付くようにスナップ。心地よいハプティックとともに、何度でも触りたくなる操作感を楽しめます。 計算尺を初めて使う方はもちろん、昔使っていた方にもおすすめです。 【主な機能】 ・掛け算モード ・割り算モード ・CI尺（逆尺）モード ・0.5刻みのスナップ吸着 ・心地よいハプティックフィードバック ・中央へ戻すボタン 正確な計算だけでなく、「滑らせる」「吸着する」という操作そのものを楽しめる、新しい計算尺を体験してください。

Five minutes of arithmetic a day, on an on-screen soroban (Japanese abacus). Set each answer by tapping the beads. Over time the soroban appears in your mind's eye, and you begin to answer in your head. ■ Practice by digits Addition, subtraction, multiplication, division and column addition (見取算) with 1-, 2- and 3-digit numbers. Ten problems a round: a right answer earns a 〇, and a miss comes with the steps to review it. ■ See the steps Every bead move is played back one at a time and named as soroban teachers name it (carry ten, five complement and so on). Multiplication by 両落とし and division by 商除法 show which rod each digit goes on. ■ Toward mental math As you answer accurately, the beads fade until they can't be seen. They still move where they would be, so your fingers keep working the soroban in your head. Each kind of problem has its own level (0–6), shown on the home screen and during a round. ■ How it works Lessons from the single bead moves of addition and subtraction to 2- and 3-digit worked examples and the methods for multiplication and division, each ending with one problem to try. ■ For • Children learning soroban, practising at home • Adults picking up the soroban they learned long ago • Anyone building mental arithmetic a little every day No account, no ads. All data stays on your device, and the app works offline.