Jawahar Navodaya Vidyalaya Selection Test (JNVST)
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Cross-Checking: Verifying answers during the exam through alternative methods
🚀 Cross-checking is a valuable skill that helps you verify your answers during an exam by using alternative methods. This ensures that your answers are correct and boosts your confidence. Imagine you're at a local market in India, buying vegetables. You calculate the total cost in your head, but to be sure, you use a calculator to check your math. This is similar to cross-checking in exams, where you use different methods to confirm your answers.
Examples💡
Example 1: Suppose you solved a math problem and found that 5 + 3 = 8. To cross-check, you can use subtraction: 8 - 3 should equal 5. If it does, your original answer is likely correct.
Example 2: If you calculated the area of a rectangle as 20 square meters using the formula length × width, you can cross-check by dividing the area by the length to see if you get the width.
Example 3: You calculated the total cost of 3 kg of apples at ₹50 per kg as ₹150. To cross-check, you can multiply the price per kg by the number of kgs: 50 × 3 = 150.
Common Mistakes to Avoid⚠️
- Relying on only one method without cross-checking can lead to errors.
- Not understanding the alternative method used for cross-checking can cause confusion.
- Skipping cross-checking due to time constraints might result in unchecked errors.