The document Worksheet Question (Part - 2) - Playing with Numbers Notes | EduRev is a part of the Class 6 Course Mathematics (Maths) Class 6.

All you need of Class 6 at this link: Class 6

**Ques 1: Fill up the blanks: ****(i) Write all even prime numbers __________.****(ii) Number of factors of 2 are __________.****(iii) Smallest pair of co-prime numbers is __________.****(iv) Smallest twin prime numbers are __________.****(v) The largest 2-digit number which is odd and prime is __________.****Ans: **(i) 2

(ii) two (1 and 2)

(iii) (2, 1)

(iv) 3, 5

(v) 97**Ques 2: Find the smallest number which is divisible by 2, 3, 4, and 5. Can we find a largest number which is divisible by 2, 3, 4 and 5?****Ans: **60, No**Ques 3: Write smallest 3-digit number which is exactly divisible by 6.****Ans: **102**Ques 4: Replace '*' by the smallest possible digit so that the following numbers are divisible by 3 and 9: ****(i) *4129 ****(ii) 2*985 ****(iii) 987*32 ****Ans: **(i) 2

(ii) 3

(iii) 7**Ques 5: Write the largest 3-digit number which is divisible by 11.****Ans: **990**Ques 6: Find HCF of : 15 m 60 cm and 20 m 16 cm.****Ans: **24 cm**Ques 7: Find the least number which when divided by 25, 40 and 60 leave the remainder 7 in each case.****Ans: **607**Ques 8: Find HCF of 90 and 243 check if it divides 90 and 243 both?****Ans: **HCF = 9, yes**Ques 9: Find LCM of 18 and 15. Check if the LCM so obtained is divisible by 15 as well as 18.****Ans: **LCM = 90, yes**Ques 10: Match the following:**

(i) HCF of two consecutive numbers | (a) 4 |

(ii) LCM of two co-prime numbers | (b) 97 |

(iii) HCF of two consecutive even numbers | (c) 1 |

(iv) Smallest composite number | (d) 2 |

(v) Largest 2-digit prime number | (e) product of two numbers |

**Ans. **(i) â†” (c)

(ii) â†” (e)

(iii) â†” (d)

(iv) â†” (a)

(v) â†” (b)

Offer running on EduRev: __Apply code STAYHOME200__ to get INR 200 off on our premium plan EduRev Infinity!

221 videos|105 docs|43 tests

### Understanding: Sieve of Eratosthenes

- Video | 05:31 min
### Writing Factors of a Number

- Video | 04:27 min
### Test: Playing With Numbers - 3

- Test | 20 ques | 20 min
### What are Prime and Composite Numbers?

- Video | 06:59 min
### What are Multiples and how are Factors and Multiples related?

- Video | 03:04 min
### NCERT Solutions(Part - 3) - Playing with Numbers

- Doc | 6 pages

- Some Important Points related to Factors and Multiples
- Video | 06:52 min
- Test: Playing With Numbers - 2
- Test | 20 ques | 20 min