How to Abacus Exercise - 3 Digits 810 - Paperback

by Sheena Chin (Author), Yonhao Fan (Author)

Having learned abacus formulas, it's time to show off your skills in solving number problems. When you feel comfortable working on three and six 3-digit numbers, you should move on to eight and ten 3-digit arithmetic. " How to Abacus Exercise" has more exercise books waiting for you to practice: 2 digits 34, 2 digits 567, 2 digits 810, 3 digits 36 and 3 digits 810. Check them all out