Task# Calculator Trouble

Illustrative MathematicsVaries

Even though students can solve this problem by multiplying, it is unlikely they will. Here it is much easier to answer the question if you can think of multiplying a number by a factor as scaling the number. Since multiplying a positive number by a factor greater than 1 always results in a larger number, the first and third products will be too large to display. Since multiplying a positive number by a factor less than 1 (but greater than zero) always results in a smaller number, the second and fourth products will be displayed on his calculator.