Day: August 30, 2007

  • Cool Little Trick for Multiplication

    What’s 23 x 33? Here’s a visual way to solve the problem. Draw 2 lines and then 3 lines to represent 23 and cross them with 3 lines followed by another 3 lines for 33 as in the drawing above. Add up the number of intersections in each corner of the square as if they […]