Question
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Tutor-Verified Answer
Answer
The value of the square is 9.
Solution
To solve the equation:
\[ 81 + \square = 90 \]
We need to find the value of the square (represented by the empty box) that makes the equation true.
**Step-by-Step Solution:**
1. **Understand the Equation:**
The equation states that when you add an unknown number (let's call it \( x \)) to 81, the result is 90.
\[ 81 + x = 90 \]
2. **Isolate the Unknown (\( x \)):**
To find the value of \( x \), subtract 81 from both sides of the equation:
\[ x = 90 - 81 \]
3. **Calculate the Difference:**
\[ x = 9 \]
**Conclusion:**
The value that satisfies the equation \( 81 + \square = 90 \) is **9**.
\(\boxed{9}\)
Reviewed and approved by the UpStudy tutoring team
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Simplify this solution Bonus Knowledge
To find the missing number, you simply want to see what you need to add to 81 to reach 90. So, subtract 81 from 90: \( 90 - 81 = 9 \). Thus, the missing square can be filled in as 9, making the complete equation \( 81 + 9 = 90 \). This equation could be useful in real-life scenarios, like budgeting! If you’ve got $81 to spend and you want to reach a total of $90, knowing that you need an extra $9 makes planning your expenses a breeze!
