Diego had 12 meters of rope. After using some rope for an activity, he had of rope left.
How many meters of rope did Diego use?

Diego originally had 12 meters of rope. If he has left, that means he has meters of rope remaining. To find out how much rope he used, subtract the remaining rope from the original amount: meters. So, Diego used 6.6 meters of rope.

Using percentages can be trickier than it seems, especially when numbers are involved! It’s a common mistake to forget to convert the percentage into a decimal before calculating; here, the decimal was crucial to determining how much rope was left. Always double-check to ensure you’re working with the right figures!