MULTIPLYING TWO DIGIT INTEGERS WITH AREA MODEL:
Split each number as the sum of a multiple of 10 with asingle digit
ie: 23 = 20 + 3 , 46 = 40 + 6 , 117 = 110 + 7
Split the rectangleinto four parts sothat the area of eachone is easier to count
The product willbe the sum of thearea of all fourrectangles