Math  /  Arithmetic

Question Solve 225÷(15)-225 \div(-15) and determine the reasonableness of the answer using operations like 25÷(10)-25 \div(-10) or 25×(10)-25 \times(-10).

Studdy Solution
Comparing all the options, we see that the third option (dividing -200 by -10) is the best choice to determine the reasonableness of Jin's answer. It is the only option that involves division, like the original problem, and the result (20) is close to Jin's answer (15), which helps Jin to check the reasonableness of his calculation.
The solution that would help Jin determine the reasonableness of his answer is dividing -200 by -10.

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