“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”, TOE, vol. 12, pp. 28–52, June 2018, Accessed: Aug. 24, 2026. Available: https://journal.ucc.edu.gh/index.php/oguaaeducator/article/view/503