“A Comparative Study of the Effect of the Methods of Decomposition and Base Complement Addition on Ghanaian Children’s Perfomance on Compound Substraction: A Comparative Study of the Effect of the Methods of Decomposition and Base Complement Addition on Ghanaian Children’s Perfomance on Compound Substraction”. The Oguaa Educator 12 (June 1, 2018): 28–52. Accessed August 24, 2026. https://journal.ucc.edu.gh/index.php/oguaaeducator/article/view/503.