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
| Author: Sheena Chin, Yonhao Fan |
| Publisher: PinGrow Media |
| Publication Date: Oct 05, 2019 |
| Number of Pages: 49 pages |
| Language: English |
| Binding: Paperback |
| ISBN-10: 1949622142 |
| ISBN-13: 9781949622140 |
