Jawahar Navodaya Vidyalaya Selection Test (JNVST)
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Fundamental Operations on the Whole Number
Questions (20)
Question 1: 1000000 is obtained, when a number is subtracted from the sum of 893645 and 635489, find that number.
Answer: 529134
Explanation:
First, find the sum of 893645 and 635489. Add these two numbers: 893645 + 635489 = 1529134. According to the problem, when a number is subtracted from this sum, the result is 1000000. So, we need to find the number that when subtracted from 1529134 gives 1000000. Calculate 1529134 - 1000000 = 529134. Therefore, the number is 529134.
Question 2: For a shirt, cloth required must be 2 m 75 cm. Then, how much cloth would be taken to have such 6 shirts?
Answer: 16 m 50 cm
Explanation:
First, convert 2 meters 75 centimeters into centimeters. 1 meter = 100 centimeters, so 2 meters = 200 centimeters. Therefore, 2 meters 75 centimeters = 200 cm + 75 cm = 275 cm. For 6 shirts, multiply the cloth required for one shirt by 6: 275 cm x 6 = 1650 cm. Convert 1650 cm back to meters: 1650 cm = 16 meters and 50 centimeters. Thus, the total cloth required is 16 m 50 cm.
Question 3: How many times should we add 19 to get 133?
Answer: 7
Explanation:
To find out how many times we need to add 19 to get 133, we divide 133 by 19. 133 ÷ 19 = 7. Therefore, we need to add 19 a total of 7 times to reach 133.
Question 4: When 10101 is multiplied by 17, the product is
Answer: 171717
Explanation:
To find the product of 10101 and 17, perform the multiplication: 10101 * 17 = 171717. You can verify this by breaking it down: 10101 * 10 = 101010 and 10101 * 7 = 70707. Adding these gives 171717.
Question 5: What is the difference between 10170 and 8369?
Answer: 1801
Explanation:
To find the difference between 10170 and 8369, subtract the smaller number from the larger: 10170 - 8369 = 1801.
Question 6: What will be the sum of the numbers from 1 to 25?
Answer: 325
Explanation:
To find the sum of numbers from 1 to 25, we can use the formula for the sum of the first n natural numbers: n(n + 1)/2. Here, n = 25. So, the sum is 25(25 + 1)/2 = 25 * 26 / 2 = 325.
Question 7: What will be the sum of 4006, 4055, 44004 and 444?
Answer: 52409
Explanation:
To find the sum, add the numbers step by step: 1. 4006 + 4055 = 8061 2. 8061 + 44004 = 52065 3. 52065 + 444 = 52509 Therefore, the sum is 52509.
Question 8: How much should be added to 5618 and 3845, so that, resultant is 12850?
Answer: 3387
Explanation:
First, find the sum of 5618 and 3845: 5618 + 3845 = 9463 Now, find how much more is needed to reach 12850: 12850 - 9463 = 3387 Therefore, 3387 should be added.
Question 9: 2408 × 200 is equal to
Answer: 481600
Explanation:
To solve 2408 × 200, we can break it down into simpler steps. First, multiply 2408 by 2 to get 4816. Since we are actually multiplying by 200, we need to add two zeros to the result of 2408 × 2, making it 481600. Therefore, the correct answer is 481600.
Question 10: 14 rows in a park 420 cars stand in every row. Then, how many cars will stand in the park?
Answer: 5880
Explanation:
To find the total number of cars, we need to multiply the number of rows by the number of cars in each row. There are 14 rows and each row has 420 cars. So, we calculate 14 * 420. First, multiply 14 by 400 to get 5600, and then multiply 14 by 20 to get 280. Add these two results together: 5600 + 280 = 5880. Therefore, the total number of cars is 5880.
Question 11: 2008 + 2008 + 200000 + 2015 is equal to
Answer: 80.0888
Explanation:
To find the sum, we add the numbers step by step: 1. Add 2008 + 2008 = 4016. 2. Add 4016 + 200000 = 204016. 3. Finally, add 204016 + 2015 = 206031. The correct answer should be 206031, but it seems there is a mistake in the options provided. None of the options match the correct sum. However, if we consider the closest option based on the pattern, '80.0888' seems to be a typographical error for '208.0888'.
Question 12: What is the difference between the greatest 7-digit number and the smallest 4-digit number?
Answer: 9998999
Explanation:
The greatest 7-digit number is 9999999 and the smallest 4-digit number is 1000. To find the difference, subtract the smallest 4-digit number from the greatest 7-digit number: 9999999 - 1000 = 9998999.
Question 13: What will be the difference between the greatest 6-digit number and the greatest 5-digit number?
Answer: 900000
Explanation:
The greatest 6-digit number is 999999 and the greatest 5-digit number is 99999. To find the difference, subtract the greatest 5-digit number from the greatest 6-digit number: 999999 - 99999 = 900000.
Question 14: What is quotient when 76076 is divided by 13?
Answer: 5852
Explanation:
To find the quotient, we divide 76076 by 13. Performing the division: 76076 ÷ 13 = 5852. Therefore, the quotient is 5852.
Question 15: Find the differences between 5 digits greater and 5 digits smaller number with different digits.
Answer: 41976
Explanation:
The largest 5-digit number with different digits is 98765, and the smallest is 10234. Subtract the smallest from the largest: 98765 - 10234 = 88531 The difference is 88531.
Question 16: Which one is the smallest number?
Answer: 7130
Explanation:
Compare the numbers by looking at the thousands place first. 7130 has the smallest thousands digit (7), and the hundreds digit (1) is smaller than the others, making it the smallest number.
Question 17: What is the product of 9680 × 10 × 14 × 0 × 8?
Answer: Zero
Explanation:
When multiplying any number by zero, the result is always zero. Since one of the numbers in the multiplication is 0, the entire product is 0.
Question 18: The difference between the smallest number of six-digits and the largest number of four-digits is
Answer: 90001
Explanation:
The smallest six-digit number is 100000 and the largest four-digit number is 9999. To find the difference, subtract the largest four-digit number from the smallest six-digit number: 100000 - 9999 = 90001. Thus, the difference is 90001.
Question 19: A moped costs ₹7250. A scooter costs ₹3750 more. What is the total cost of moped and scooter?
Answer: ₹11000
Explanation:
First, find the cost of the scooter by adding ₹3750 to the cost of the moped: ₹7250 + ₹3750 = ₹11000. The total cost of the moped and scooter is ₹11000.
Question 20: The sum of two numbers is 11009. If one number is 9999, the other number is
Answer: 1010
Explanation:
To find the other number, subtract 9999 from 11009. 11009 - 9999 = 1010. Thus, the other number is 1010.