Jawahar Navodaya Vidyalaya Selection Test (JNVST)
Your gateway to quality education at Jawahar Navodaya Vidyalaya
Calculation Skills: Performing calculations based on data
🚀 Calculation skills are essential for solving problems that involve numbers and data. In the Jawahar Navodaya Vidyalaya Selection Test (JNVST), students often encounter questions that require them to perform calculations based on data presented in various forms, such as tables, charts, or graphs. Understanding how to interpret this data and perform accurate calculations is crucial for success.
Examples💡
Example 1: Suppose you are given a table showing the prices of different vegetables in a local market. The table lists the prices of potatoes, tomatoes, and onions per kilogram. If you need to buy 2 kg of potatoes, 1.5 kg of tomatoes, and 1 kg of onions, how much will it cost in total? To solve this, multiply the price per kg by the quantity for each vegetable and add the results.
Example 2: Imagine a line chart showing the sales of a shop over a week. The chart shows that on Monday, the sales were Rs. 500, on Tuesday Rs. 700, and so on. To find the total sales for the week, add the sales for each day.
Example 3: A bar chart displays the number of books read by students in a class over a month. If the chart shows that 5 students read 3 books each, 10 students read 2 books each, and 15 students read 1 book each, calculate the total number of books read by all students.
Common Mistakes to Avoid⚠️
- Mistake 1: Misreading the data in a chart or table. Always double-check the labels and units to ensure you are interpreting the data correctly.
- Mistake 2: Forgetting to multiply the price by the quantity when calculating total cost. Always remember to apply the correct operation based on the context.
- Mistake 3: Adding values incorrectly. Use a calculator or double-check your addition to avoid simple arithmetic errors.