Question

For each of the following expressions, show each step a student would folow to mentally perform the calculations in the whole numbers. For each step, identify the law, definition , axiom ec that was used to roduce that step.

125x 15x 3 x 8

Answer 1

Multiply the numbers one after the other. That makes a total of three multiplications. For the first step,
125 x 15 = 1875

If you multiply that by 3 and then multiply that answer by 8, you will have the answer