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All questions of Knowing Our Numbers for Class 6 Exam
Sum of 178 and 69 to nearest hundred is
- a)100
- b)200
- c)250
- d)300
Correct answer is option 'B'. Can you explain this answer?
Sum of 178 and 69 to nearest hundred is
a)
100
b)
200
c)
250
d)
300
|
Gunjan Lakhani answered |
To solve this, let's first find the sum of 178 and 69:
178+69=247
Now, we round 247 to the nearest hundred.
- The nearest hundred to 247 is 200 because 247 is closer to 200 than to 300.
So, the sum of 178 and 69 rounded to the nearest hundred is 200.
Answer: 2 (200)
Estimated value of 467 to nearest thousand is- a)Zero
- b)400
- c)470
- d)1000
Correct answer is option 'A'. Can you explain this answer?
Estimated value of 467 to nearest thousand is
a)
Zero
b)
400
c)
470
d)
1000
|
Eduskill Classes answered |
The estimated value of 467 to the nearest thousand is zero because:
- When rounding to the nearest thousand, any number below 500 is rounded down.
- Since 467 is less than 500, it is rounded down to zero.
What is the even prime number?- a)3
- b)2
- c)1
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
What is the even prime number?
a)
3
b)
2
c)
1
d)
None of the above
|
EduRev Class 6 answered |
The only even prime number is 2. This is because a prime number is defined as a number greater than 1 that has no positive divisors other than 1 and itself. While all other even numbers can be divided by 2, making them not prime, 2 can only be divided by 1 and 2, making it the only even prime number.
The smallest 5-digit number is bigger than the largest 4-digit number by _______.- a)999
- b)998
- c)1000
- d)1
Correct answer is option 'D'. Can you explain this answer?
The smallest 5-digit number is bigger than the largest 4-digit number by _______.
a)
999
b)
998
c)
1000
d)
1
|
Sankar Saha answered |
Understanding 5-digit and 4-digit Numbers
To determine the difference between the smallest 5-digit number and the largest 4-digit number, we need to identify these two numbers first.
Smallest 5-Digit Number
- The smallest 5-digit number is 10000.
- This is the first number that contains five digits.
Largest 4-Digit Number
- The largest 4-digit number is 9999.
- This is the last number that has four digits.
Calculating the Difference
Now, we can calculate the difference between these two numbers:
- Difference = Smallest 5-digit number - Largest 4-digit number
- Difference = 10000 - 9999
Result of the Calculation
- When we perform the subtraction, we find:
10000 - 9999 = 1
Conclusion
The smallest 5-digit number (10000) is bigger than the largest 4-digit number (9999) by exactly 1. Therefore, the correct answer is option D.
This simple calculation highlights the relationship between 4-digit and 5-digit numbers, showing how they increment in value.
To determine the difference between the smallest 5-digit number and the largest 4-digit number, we need to identify these two numbers first.
Smallest 5-Digit Number
- The smallest 5-digit number is 10000.
- This is the first number that contains five digits.
Largest 4-Digit Number
- The largest 4-digit number is 9999.
- This is the last number that has four digits.
Calculating the Difference
Now, we can calculate the difference between these two numbers:
- Difference = Smallest 5-digit number - Largest 4-digit number
- Difference = 10000 - 9999
Result of the Calculation
- When we perform the subtraction, we find:
10000 - 9999 = 1
Conclusion
The smallest 5-digit number (10000) is bigger than the largest 4-digit number (9999) by exactly 1. Therefore, the correct answer is option D.
This simple calculation highlights the relationship between 4-digit and 5-digit numbers, showing how they increment in value.
Rita has a ribbon of length 2070 mm. Sita has a ribbon whose length is 1232 mm shorter than Rita's ribbon. What is the approximate length of Sita's ribbon when rounded to the nearest hundred (in millimeters)?- a)500
- b)1000
- c)800
- d)2000
Correct answer is option 'C'. Can you explain this answer?
Rita has a ribbon of length 2070 mm. Sita has a ribbon whose length is 1232 mm shorter than Rita's ribbon. What is the approximate length of Sita's ribbon when rounded to the nearest hundred (in millimeters)?
a)
500
b)
1000
c)
800
d)
2000
|
Subset Academy answered |
To find the approximate length of Sita's ribbon, we need to subtract 1232 mm from Rita's ribbon length and then round the result to the nearest hundred.
Rita's ribbon length = 2070 mm Sita's ribbon length = Rita's ribbon length - 1232 mm
Sita's ribbon length ≈ 2070 mm - 1232 mm Sita's ribbon length ≈ 838 mm
When rounded to the nearest hundred, Sita's ribbon length is approximately 800 mm.
Rita's ribbon length = 2070 mm Sita's ribbon length = Rita's ribbon length - 1232 mm
Sita's ribbon length ≈ 2070 mm - 1232 mm Sita's ribbon length ≈ 838 mm
When rounded to the nearest hundred, Sita's ribbon length is approximately 800 mm.
1 billion = ______ million
- a)10
- b)100
- c)1000
- d)10000
Correct answer is option 'C'. Can you explain this answer?
1 billion = ______ million
a)
10
b)
100
c)
1000
d)
10000
|
|
Gunjan Lakhani answered |
One billion is equal to 1000 million. This is because when we multiply 1000 by 1000, we get 1 million. Therefore, if we multiply 1000 million by 1000, we get 1 billion.
The tickets sold for the semi-final IPL match were 9872, whereas 10050 tickets were sold during the finals. How many more tickets, estimated to the nearest tens, were sold during the finals?- a)160
- b)170
- c)180
- d)190
Correct answer is option 'C'. Can you explain this answer?
The tickets sold for the semi-final IPL match were 9872, whereas 10050 tickets were sold during the finals. How many more tickets, estimated to the nearest tens, were sold during the finals?
a)
160
b)
170
c)
180
d)
190
|
Vp Classes answered |
During the finals, 10050 tickets were sold, whereas for the semi-final match, only 9872 tickets were sold. To find out how many more tickets were sold during the finals, we subtract the number of tickets sold for the semi-finals from the number of tickets sold during the finals. Therefore, 10050 - 9872 = 178. Since we need to estimate to the nearest tens, the answer would be 180.
Roman Numeral of 400 is- a)CD
- b)CL
- c)LD
- d)XC
Correct answer is option 'A'. Can you explain this answer?
Roman Numeral of 400 is
a)
CD
b)
CL
c)
LD
d)
XC
|
Abhay Datta answered |
Understanding Roman Numerals
Roman numerals are a numeric system that originated in ancient Rome, using combinations of letters from the Latin alphabet to represent numbers. Each letter has a specific value, which is added or subtracted based on its placement in relation to other letters.
Values of Key Roman Numerals
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
Breaking Down 400 in Roman Numerals
To represent the number 400 in Roman numerals, we need to consider how the values combine:
- The letter "C" stands for 100.
- Therefore, "CD" represents 400, which is achieved by subtracting 100 (C) from 500 (D).
Why Not the Other Options?
- CL (150): This represents 100 + 50, which equals 150.
- LD (Not Valid): There’s no valid Roman numeral for 450; "L" (50) cannot precede "D" (500) in this way.
- XC (90): This signifies 100 - 10, which equals 90, not relevant to 400.
Conclusion
The correct Roman numeral for 400 is "CD", making option A the correct answer. Understanding the principles of addition and subtraction in Roman numerals is crucial for interpreting and writing these numbers accurately.
Roman numerals are a numeric system that originated in ancient Rome, using combinations of letters from the Latin alphabet to represent numbers. Each letter has a specific value, which is added or subtracted based on its placement in relation to other letters.
Values of Key Roman Numerals
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
Breaking Down 400 in Roman Numerals
To represent the number 400 in Roman numerals, we need to consider how the values combine:
- The letter "C" stands for 100.
- Therefore, "CD" represents 400, which is achieved by subtracting 100 (C) from 500 (D).
Why Not the Other Options?
- CL (150): This represents 100 + 50, which equals 150.
- LD (Not Valid): There’s no valid Roman numeral for 450; "L" (50) cannot precede "D" (500) in this way.
- XC (90): This signifies 100 - 10, which equals 90, not relevant to 400.
Conclusion
The correct Roman numeral for 400 is "CD", making option A the correct answer. Understanding the principles of addition and subtraction in Roman numerals is crucial for interpreting and writing these numbers accurately.
The price of a school bag is 250 Rs. 95 paise but Priya has only 210 Rs. 25 paise. How much more money does she require to buy the bag?- a)407 p
- b)4000 p
- c)4070 p
- d)470 p
Correct answer is option 'C'. Can you explain this answer?
The price of a school bag is 250 Rs. 95 paise but Priya has only 210 Rs. 25 paise. How much more money does she require to buy the bag?
a)
407 p
b)
4000 p
c)
4070 p
d)
470 p
|
|
EduRev Class 6 answered |
The price of the school bag is 250 Rs. 95 paise, while Priya has 210 Rs. 25 paise. To determine how much more money she needs, we first convert both amounts into paise.
- 250 Rs. 95 paise = 250 × 100 + 95 = 25,095 paise
- 210 Rs. 25 paise = 210 × 100 + 25 = 21,025 paise
Next, we subtract the amount Priya has from the total price of the bag:
25,095 paise - 21,025 paise = 4,070 paise
Therefore, Priya requires 4070 paise more to purchase the bag.
The greatest natural number which when rounded off to the nearest hundreds as 500 is- a)540
- b)500
- c)450
- d)205
Correct answer is option 'A'. Can you explain this answer?
The greatest natural number which when rounded off to the nearest hundreds as 500 is
a)
540
b)
500
c)
450
d)
205
|
Rahul Kumar answered |
To find the greatest natural number that rounds off to 500 when rounded to the nearest hundred, consider the range of numbers that round to 500.
- Numbers from 450 to 549 round off to 500 when rounded to the nearest hundred.
- The greatest number in this range is 549.
So, the correct answer is A: 549.
Fill in the blanks:
1 million = ______ thousands- a)10
- b)100
- c)1000
- d)10000
Correct answer is option 'C'. Can you explain this answer?
Fill in the blanks:
1 million = ______ thousands
1 million = ______ thousands
a)
10
b)
100
c)
1000
d)
10000
|
Saptarshi Das answered |
Understanding the Relationship Between Millions and Thousands
When we look at large numbers, it's essential to understand how they relate to each other in terms of units like millions and thousands.
1 Million Defined
- 1 million is a numerical value represented as 1,000,000.
- This number signifies one thousand thousands.
Breaking Down the Number
To comprehend how many thousands are in a million, we can break it down:
- 1 thousand = 1,000
- Therefore, to find out how many thousands fit into 1 million, we perform the following calculation:
- 1,000,000 (which is 1 million) ÷ 1,000 (which is 1 thousand) = 1,000.
Conclusion
Thus, it is clear that:
- 1 million is equal to 1,000 thousands.
- Hence, the correct answer to the question is option C: 1000.
Understanding these relationships helps in grasping larger concepts in mathematics and can be particularly useful in topics such as finance, statistics, and data interpretation. Recognizing how many thousands make up a million enhances numerical literacy, especially for students in Class 6 and beyond.
When we look at large numbers, it's essential to understand how they relate to each other in terms of units like millions and thousands.
1 Million Defined
- 1 million is a numerical value represented as 1,000,000.
- This number signifies one thousand thousands.
Breaking Down the Number
To comprehend how many thousands are in a million, we can break it down:
- 1 thousand = 1,000
- Therefore, to find out how many thousands fit into 1 million, we perform the following calculation:
- 1,000,000 (which is 1 million) ÷ 1,000 (which is 1 thousand) = 1,000.
Conclusion
Thus, it is clear that:
- 1 million is equal to 1,000 thousands.
- Hence, the correct answer to the question is option C: 1000.
Understanding these relationships helps in grasping larger concepts in mathematics and can be particularly useful in topics such as finance, statistics, and data interpretation. Recognizing how many thousands make up a million enhances numerical literacy, especially for students in Class 6 and beyond.
Sum 3537 + 3884 to nearest tens is
- a)1000
- b)7400
- c)7420
- d)7440
Correct answer is option 'C'. Can you explain this answer?
Sum 3537 + 3884 to nearest tens is
a)
1000
b)
7400
c)
7420
d)
7440
|
|
EduRev Class 6 answered |
To find the sum of 3537 and 3884 to the nearest tens, we round each number to the nearest tens and then add them together.
Rounding 3537 to the nearest tens gives us 3540, and rounding 3884 to the nearest tens gives us 3880.
Adding these rounded numbers together gives us 7420, which is the nearest tens value for the sum of 3537 + 3884.
Rounding 3537 to the nearest tens gives us 3540, and rounding 3884 to the nearest tens gives us 3880.
Adding these rounded numbers together gives us 7420, which is the nearest tens value for the sum of 3537 + 3884.
Estimated the value of the product of 108 and 12.
- a)1000
- b)1500
- c)1700
- d)2000
Correct answer is option 'A'. Can you explain this answer?
Estimated the value of the product of 108 and 12.
a)
1000
b)
1500
c)
1700
d)
2000
|
|
EduRev Class 6 answered |
The product of 108 and 12 can be estimated by rounding both numbers to the nearest ten. 108 rounds to 110 and 12 rounds to 10. Multiplying these rounded numbers gives us an estimate of 1100. However, since we rounded up for both numbers, the actual product will be slightly less than 1100. The closest option is 1000, which is the correct answer.
Find the smallest number among the following numbers. 1411, 14504, 2431, 10001, 9900- a)10001
- b)9900
- c)2431
- d)1411
Correct answer is option 'D'. Can you explain this answer?
Find the smallest number among the following numbers. 1411, 14504, 2431, 10001, 9900
a)
10001
b)
9900
c)
2431
d)
1411
|
|
Charvi Pillai answered |
Understanding the Problem
To find the smallest number among the given options, we need to compare each number systematically.
Given Numbers:
- 1411
- 14504
- 2431
- 10001
- 9900
Step-by-Step Comparison
1. Comparing Each Number
- Start with 1411: This is a four-digit number.
- Next, 14504: This is a five-digit number, which is larger than any four-digit number.
- Then, 2431: This is also a four-digit number, but larger than 1411.
- Now, 10001: This is a five-digit number, larger than the previous four-digit numbers.
- Finally, 9900: This is a four-digit number, but it's larger than 1411 and 2431.
Identifying the Smallest
- By comparing all numbers:
- 1411 is the smallest among 1411, 2431, and 9900.
- 14504 and 10001 are both larger than 1411.
Thus, among all the numbers, 1411 is the smallest.
Conclusion
The correct answer is option 'D', which is 1411. This number is less than all the other options provided.
To find the smallest number among the given options, we need to compare each number systematically.
Given Numbers:
- 1411
- 14504
- 2431
- 10001
- 9900
Step-by-Step Comparison
1. Comparing Each Number
- Start with 1411: This is a four-digit number.
- Next, 14504: This is a five-digit number, which is larger than any four-digit number.
- Then, 2431: This is also a four-digit number, but larger than 1411.
- Now, 10001: This is a five-digit number, larger than the previous four-digit numbers.
- Finally, 9900: This is a four-digit number, but it's larger than 1411 and 2431.
Identifying the Smallest
- By comparing all numbers:
- 1411 is the smallest among 1411, 2431, and 9900.
- 14504 and 10001 are both larger than 1411.
Thus, among all the numbers, 1411 is the smallest.
Conclusion
The correct answer is option 'D', which is 1411. This number is less than all the other options provided.
The smallest natural number which when rounded off to the nearest hundreds as 500 is- a)499
- b)501
- c)450
- d)549
Correct answer is option 'C'. Can you explain this answer?
The smallest natural number which when rounded off to the nearest hundreds as 500 is
a)
499
b)
501
c)
450
d)
549
|
|
EduRev Class 6 answered |
To find the smallest natural number that rounds off to 500 when rounded to the nearest hundred, consider the range of numbers that round to 500.
- Numbers from 450 to 549 round off to 500 when rounded to the nearest hundred.
- Therefore, the smallest number that rounds to 500 is 450.
So, the correct answer is C: 450.
In the International system of numeration, one crore is equal to ______ million.- a)1
- b)10
- c)100
- d)1000
Correct answer is option 'B'. Can you explain this answer?
In the International system of numeration, one crore is equal to ______ million.
a)
1
b)
10
c)
100
d)
1000
|
Praveen Kumar answered |
In the International system of numeration, one crore is equal to ten million. This is because one crore is equal to ten million in the Indian numbering system, which is used in countries like India, Pakistan, and Bangladesh. In this system, one crore is equivalent to ten million, so the correct answer is 10.
The biggest 4 digit number formed by using each of the digits 5, 7, 8, 9, without repetition is- a)9875
- b)8975
- c)7589
- d)5789
Correct answer is option 'A'. Can you explain this answer?
The biggest 4 digit number formed by using each of the digits 5, 7, 8, 9, without repetition is
a)
9875
b)
8975
c)
7589
d)
5789
|
Shiksha Academy answered |
The question asks for the biggest 4-digit number that can be formed using the digits 5, 7, 8, and 9 without repetition.
The largest possible number formed with these digits is:
- 9875
This number is indeed the greatest that can be created using each digit exactly once.
Solve:
15 × 1000 + 7 × _______ + 6 × 10 = 15760- a)1
- b)10
- c)100
- d)1000
Correct answer is option 'C'. Can you explain this answer?
Solve:
15 × 1000 + 7 × _______ + 6 × 10 = 15760
15 × 1000 + 7 × _______ + 6 × 10 = 15760
a)
1
b)
10
c)
100
d)
1000
|
|
Vp Classes answered |
We are given the equation:
15 × 1000 + 7 × _______ + 6 × 10 = 15760
Let's simplify the known values first:
- 15 × 1000 = 15000
- 6 × 10 = 60
Now, substitute these values into the equation:
15000 + 7 × _______ + 60 = 15760
Subtract 15000 and 60 from 15760:
15760 - 15000 - 60 = 700
So, the missing value is:
7 × _______ = 700
To find the missing value, divide 700 by 7:
700 ÷ 7 = 100
Thus, the missing value is 100.
So, the correct answer is C: 100.
The sum of 267 + 132 to the nearest ten is _______.- a)300
- b)200
- c)350
- d)400
Correct answer is option 'D'. Can you explain this answer?
The sum of 267 + 132 to the nearest ten is _______.
a)
300
b)
200
c)
350
d)
400
|
|
Praveen Kumar answered |
First, add the numbers:
267 + 132 = 399
Now, round 399 to the nearest ten. Since the last digit (9) is 5 or greater, we round up to the next ten:
399 rounded to the nearest ten is 400.
So, the correct answer is D: 400.
The number 28,549 when rounded off to the nearest hundreds is- a)28,000
- b)28,500
- c)28,600
- d)29,000
Correct answer is option 'B'. Can you explain this answer?
The number 28,549 when rounded off to the nearest hundreds is
a)
28,000
b)
28,500
c)
28,600
d)
29,000
|
|
EduRev Class 6 answered |
To round 28,549 to the nearest hundred, follow these steps:
- Identify the tens place, which is 4.
- Since 4 is less than 5, we round down.
- This keeps the hundreds place the same.
Therefore, 28,549 rounded to the nearest hundred is 28,500.
The correct answer is B: 28,500.
Chapter doubts & questions for Knowing Our Numbers - Maths Olympiad Class 6 2025 is part of Class 6 exam preparation. The chapters have been prepared according to the Class 6 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 6 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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