Edward knows that the Mavs won 11 out of 20 games. He subtracts to find that the Mav lost 9 games what mistake did Edward make.

Edward made a mistake in his subtraction. He correctly identified that the Mavs won 11 out of 20 games, but when subtracting to find the number of losses, he should have calculated:

\[ \text{Number of losses} = \text{Total games} - \text{Number of wins} = 20 - 11 = 9 \]

However, the result 9 is actually correct, so there isn't a mistake in the math itself. The mistake might be in the interpretation of the problem:

1. If Edward was supposed to subtract the number of losses from something other than the total games, or if there was some other context or condition given in the problem, then subtracting to get 9 might be incorrect.

2. If Edward thought that subtracting 11 wins from 20 was somehow incorrect, then the mistake lies in misunderstanding basic subtraction rather than making an actual error in the subtraction operation.

Would you like to explore this further, or do you have any specific details in mind that might clarify the error?

Here are 5 related questions:
1. How many games would the Mavs need to win to have a winning record?
2. If the Mavs had played 25 games and won 11, how many would they have lost?
3. What is the win percentage for the Mavs based on the given data?
4. If the Mavs win 4 more games, what will their new win-loss record be?
5. How would the subtraction change if Edward were calculating the losses from a different number of games?

**Tip:** When solving problems involving subtraction or percentages, double-check if the numbers align with the context of the problem to avoid misinterpretations.

Explore common mistakes in subtraction with an example problem. Learn how to correctly subtract numbers and avoid misinterpretations. Suitable for elementary school students.

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