Hey friends! This Abacus Mental Maths Workbook is perfect for kids aged 5-9. It covers essential Abacus formulas like +4, +3, +2, +1, and -4, -3, -2, -1, with a total of 21 practice pages! Inside, you’ll find simple division by 2 and 3, math tricks for subtracting from 100, and space for mini-tests or dictation. Plus, you can practice on www.rainbowmaths.com, where timed mock tests are aligned with the workbook content. Thank you