A mixed number has a part that is whole and a part that is a friction. For example: 3 1/2 and 3 2/3 3 1/2 * 3 1/4 = 7/2 * 13/4 = 91/8 = 11 3/8 9 < 11 3/8 < 12
We know that 3 × 3 = 9 And 3 × 4 = 12 Therefore, as long as both the numbers are greater than 3 and less than 7/2, the product will remain between 9 and 12 An example is: (13/4.) × (33/10) = 3.25 × 3.3 = 429/40 = 10.725
