Question
5. Estimate \( 699012-50217 \). a. 600000 b. 650000 c. 640000 EXERCISE 4 1. Add and subtract these numb Check your answers by using
Ask by Romero Cross. in South Africa
Feb 24,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The estimated result of \( 699012 - 50217 \) is \( 650000 \).
Solution
To estimate \( 699012 - 50217 \), we can round the numbers to the nearest hundred thousand and ten thousand for simplicity.
1. **Round \( 699012 \)**:
- The nearest hundred thousand is \( 700000 \).
2. **Round \( 50217 \)**:
- The nearest ten thousand is \( 50000 \).
Now, we can perform the estimation:
\[
700000 - 50000 = 650000
\]
Thus, the estimated result of \( 699012 - 50217 \) is \( 650000 \).
The correct answer is:
**b. 650000**.
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Simplify this solution Bonus Knowledge
To estimate \( 699012 - 50217 \), you can round the numbers to the nearest hundred thousand. So, 699012 rounds to 700000 and 50217 rounds to 50000. Now, subtracting gives you \( 700000 - 50000 = 650000 \). That makes option b the best estimation! When estimating, remember that it's all about simplifying the numbers to make quick calculations. A common mistake is rounding too closely to the original numbers, which can lead to less accurate estimations. Aim for easy-to-work-with numbers to sharpen that guessing game!
