Quickly finding the quintuple of -2.25

To quickly find the quintuple of -2.25, you multiply -2.25 by 5. This operation means you are taking the original number -2.25 and increasing it fivefold. Multiplying by 5 is the same as adding -2.25 to itself five times, which simplifies the calculation and gives the total amount in just one step. When you calculate -11.25 by multiplying -2.25 by 5, you receive the quintuple of -2.25. This approach is efficient and applies to any number you choose for -2.25. For example, if -2.25 were 7, then 7 multiplied by 5 would give -11.25 as 35. This method allows you to quickly find five times any number using simple multiplication.