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**CBSE Class 6 Mathematics Knowing our Numbers Extra Questions. **myCBSEguide has just released Chapter Wise Question Answers for class 6 Maths. There chapter wise Practice Questions with complete solutions are available for download in **myCBSEguide **website and mobile app. These Extra Questions with solution are prepared by our team of expert teachers who are teaching grade in CBSE schools for years. There are around 4-5 set of solved Mathematics Extra questions from each and every chapter. The students will not miss any concept in these Chapter wise question that are specially designed to tackle Exam. We have taken care of every single concept given in **CBSE Class 6 Mathematics** **syllabus** and questions are framed as per the latest marking scheme and blue print issued by CBSE for Class 6.

**CBSE Class 6 Maths Extra Questions**

## CBSE Class 6 Maths Chapter 1 Important Questions

**Ch – 1 Knowing our Numbers**

- Starting from the smallest 8-digit number, write the next five numbers in ascending order.
- None of these
- 10000000, 10000001, 10000002, 10000003, 10000004
- 10000001, 10000002, 10000003, 10000004, 10000005
- 10000004, 10000003, 10000002, 10000001, 10000000

- Which is greatest?

6895, 23787, 24569, 24657- 24567
- 23787
- 24657
- 6895

- Insert commas suitably and write the names according to International System of Numeration: 78921092
- 78,921,092
- None of these
- 78,92,10,92
- 7,89,21,092

- What is the sum of 567 and 843?
- 843
- 1500
- 1410
- 567

- Identify the greatest and the smallest in 2853, 7691, 9999, 12002, 124.
- 12202, 124
- None of these
- 12202, 7691
- 9999, 124

**Match the following-**Column I Column II a. Estimation p. International System b. Billion, Million q. Rough Calculation c. Crore r. 90,030 d. Nine Thousand Thirty s. Indian System **Fill in the blanks:**- 1 million = _____ hundred thousand.
- 1 crore = _____ ten lakh.
- 1 crore = _____ million.
- 1 million = _____ lakh.

**State whether the following statements are true or false.**- 1 Thousand = 10 hundred.
- There are many Roman Numbers.
- You are using estimation to get rough idea.
- Standard unit of mass is centimetre.

- How many crores makes a billion?
- Find the greatest number from below number

763298 and 764298 - Place commas correctly and write the numerals :

a) Seventy three lakh seventy five thousand three hundred seven.

b) Nine crore five lakh forty one.

c) Seven crore fifty two lakh twenty one thousand three hundred two.

d) Fifty eight millions four hundred twenty three thousand two hundred two. - On Sunday 6000 people visited a zoo. Among them 2615 were children then how many adult visited zoo?
- Kirti Bookstore sold books worth Rs.2,85,891 in the first week of June and books worth Rs.4,00,768 in the second week of the month. How much was the sale for the two weeks together? In which week was the sale greater and by how much?
- Find the greatest and the smallest number. 42375, 42367, 42329, 42338.
- Write and solve the expression: Thirteen multiplied by sum of four and eleven. Now reverse the result and add it to earlier result, what you obtain multiply it by 13.

**Ch – 1 Knowing our Numbers**

**Answer**

- 10000000, 10000001, 10000002, 10000003, 10000004

Explanation: The smallest 8-digit number is 1,00,00,000 and the next four numbers are 1,00,00,001, 1,00,00,002, 1,00,00,003 and 1,00,00,004

- 10000000, 10000001, 10000002, 10000003, 10000004
- 24657

Explanation: The number has 4 in thousands place and 6 in hundreds place

- 24657
- 78,921,092

- 1410

Explanation: 567 + 843 = 1410

- 1410
- 12202, 124

Explanation: The number containing 5 digits is greater than the numbers containing digits 4 or 3 in short

5 digit number > 4 digit number > 3 digit number

The number containing 3 digits is smaller than the numbers containing digits 4 or 5 in short

3 digit number < 4 digit number < 5 digit number

- 12202, 124
- {tex} \to {/tex} q
- {tex} \to {/tex} p
- {tex} \to {/tex} s
- {tex} \to {/tex} r

- 1 million =
__ten__hundred thousand. - 1 crore =
__ten__ten lakh. - 1 crore =
__ten__million. - 1 million =
__ten__lakh.

- 1 million =
- True
- False
- True
- False

- 1 billion= 100 crore
- 764298 is the greatest number
- a) 73,75,307

b) 9,05,00,041

c) 7,52,21,302

d) 58,423,202 - Total number of people visited the zoo = 6000 people

Total number of children = 2615 children

Then number of adults = 6000 – 2615 = 3385 - Sale of books in the first week = Rs.2,85,891.

Sale of books in the second week = Rs.4,00,768

∴ Sale for the two weeks together = Rs.2,85,891 + Rs.4,00,768 = Rs.6,86,659.

The sale was greater in the second week by Rs. 4,00,768 – Rs.2,85,891 i.e., by Rs.1,14,877. - The greatest number is 42375

The smallest number is 42329 - Expression 13 {tex} \times {/tex} (4 + 11) = 13 {tex} \times {/tex} 15= 195

On reversing the answer = 591

Adding reversing number to the result i.e. 591 + 195 = 786

Multiplying it by 13 i.e. 786 {tex} \times {/tex} 13= 10218.