Later for 2 digit numbers was 'box' method. For example 25x15, draw a grid with the tens and ones from each number as columns and rows. Fill the grid with the product of the row and column numbers. Then add call the cells biggest to smallest. Like so:
February 26, 2025 at 2:41 AM
Later for 2 digit numbers was 'box' method. For example 25x15, draw a grid with the tens and ones from each number as columns and rows. Fill the grid with the product of the row and column numbers. Then add call the cells biggest to smallest. Like so: