" Skills required for mental math(1) - numeration, number notation, composition and decomposition of numbers"

blog : 18-Feb-2022

Two abilities are required to perform mental math calculations: The first is the ability to read the structure and background of numbers, which entails an understanding of numbers in terms of quantities, including the numeration system (how to express numbers in words, such as "two hundred and thirty-five"), the number notation system (how to express numbers as "235" using the numbers 1, 2, 3, 4), and composite/decomposition of single digit numbers (6 into 1 and 5, 2 and 4, 3 and 3 etc.).