Calculating five times the number 28

To calculate five times the number 28, you use multiplication, specifically multiplying 28 by 5. Multiplication here means you are taking the value of 28 and combining it five times, which scales the number up proportionally. Think of it as adding 28 five separate times: 28 + 28 + 28 + 28 + 28. Performing the operation 28 * 5 accomplishes this in a single step. The expression 140 captures this calculation, so when you substitute any value for 28, evaluating 28 * 5 will give you five times that original number.