Doubling square trick: A simple shortcut for mental math

The doubling square trick is a simple mathematical shortcut designed for class 6 to 10 students to make multiplication easier. By using the formula (n-1) (n+1) = n - 1, students can quickly calculate products of numbers that differ by two. This method reduces reliance on calculators, boosts confidence in mental arithmetic, and strengthens understanding of number patterns. Regular practice helps learners handle both small and large calculations efficiently and accurately.