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This study sought to assess number sense comprehension levels of In-service Primary School Teachers (IPST). This was a mixed method study where quantitative data was collected through a number sense assessment questionnaire. Out of 82 questionnaires, 69 were successfully completed and returned...

Since the 1980s, mathematics educators around the world have accepted the view that to develop numeracy effectively, young children need initially to use strategies for mental calculation rather than to memorise textbook procedures. The term mental calculation refers to informal, often untaught...