Question

Complete the following:

Multiply these numbers the quickest and easiest way possible: 87 x 5 x 2

Explain how you were able to quickly determine the product. Justify your reasoning using a property of multiplication.

Answer 1

The answer is 870 and here’s how I did it. First off, I multiplied 5 times 2 which is 10. Then, I multiplied 87 times 10 which is the answer, 870. Reminder: When multiplying a number by 10, make sure to put a 0 at the end