Master Addition vs Byeoldosa

Find the best addition king in the world! In the first to tenth round, you'll compete for who can solve the addition quiz faster. 1 to 4 rounds of single-digit addition problems, From four to eight rounds, two-digit addition problems, From the 9th to the 10th round, three-digit addition problems will be released. Who can become the world's best addition king with the shortest record? Download now and challenge the King of Addition! It is perfect not only for simple competition games, but also for your child's educational games.

Byeoldosa is an arithmetic practice app for working through addition, subtraction, multiplication, and division step by step. • Levels are organised by difficulty, so you can start from the basics and move on to more advanced problems at your own pace. • Problems range from single-digit to three-digit numbers, with stages that change depending on whether carrying or borrowing is involved. • In vertical (column) calculation mode, you can follow each column one box at a time, much like writing out the sum on paper. • Every practice set is saved automatically, and your scores and time spent are shown in simple charts, so you can see how your speed and accuracy change as you keep practising. It’s a good fit for students who want to strengthen their arithmetic, for anyone who’d like a bit of mental exercise, or for those moments when you just feel like doing a few number problems. Whenever you feel like practising numbers, just open Byeoldosa.