Mathematising Subtraction (Sandeep Srivastava, Shreya Sahai)

Let us be clear that subtraction is a far nuanced operation that how it is taught and presented in most school systems. A confident mastery over subtraction calls for deeper and sensitive exploration of the nature of number systems. For instance, how do we see ‘3002 – 3’ as 2999, or how ‘3002 – 65 – 79 – 123’ is best computed as ‘3002 – (65 + 79 + 123).’ ❖ Download the abridged version to take a peek into the world of numbers and operations.