9
Question How many tiny squares are there in the following picture? Write the prime factorisation of the number of tiny squares.
Big squares in a row = 9 Big squares in a column = 9 Tiny squares in a big square = 25 ∴ Total tiny squares = 9 × 9 × 25 = 2025 Now prime factorisation of 2025 = 3 × 3 × 3 × 3 × 5 × 5 = 452 Figure It Out (Pages 16-17)