Calculating five times the number 9

To calculate five times the number 9, you use multiplication, specifically multiplying 9 by 5. Multiplication here means you are taking the value of 9 and combining it five times, which scales the number up proportionally. Think of it as adding 9 five separate times: 9 + 9 + 9 + 9 + 9. Performing the operation 9 * 5 accomplishes this in a single step. The expression 45 captures this calculation, so when you substitute any value for 9, evaluating 9 * 5 will give you five times that original number.