Ex 3.7, 8 - Chapter 3 Class 6 Playing with Numbers
Last updated at Jan. 3, 2019 by Teachoo
Statement questions on LCM
How to check if LCM is to be found or HCF
What is the smallest number when divided by numbers 2, 4, 6 gives remainder 0?
What is the smallest number when divided by numbers 2, 4, 6 gives remainder 7?
Example 14 Important
Ex 3.7, 8 Important You are here
Ex 3.7, 4
Ex 3.7, 9
Ex 3.7, 5 Important
Example 13
Ex 3.7, 2 Important
What will be the smallest 3-digit number which divides 2, 4, 6 and leaves remainder 0?
What will be the greatest 3-digit number which divides 2, 4, 6 and leaves remainder 0?
Ex 3.7, 6
Chapter 3 Class 6 Playing with Numbers
Concept wise
- Factors and Multiples
- Perfect number
- Prime and Composite Numbers
- Sum of prime numbers
- Prime numbers from 1 to 100
- Divisibility Tests - Divisibility by 5, 10, 2
- Divisibility Tests - Divisibility by 4, 8
- Divisibility Tests - Divisibility by 3, 6, 9
- Divisibility Tests - Divisibility by 11
- Divisibility Tests - All
- Common Multiples
- Common Factors
- More Divisibility Rules
- Factor Tree
- Prime Factorisation
- Highest Common Factor
- Lowest Common Multiple
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Statement questions on LCM
- Statement questions on HCF
Transcript
Least number when divided by 6, 15, 18 and leaves remainder 0 = LCM of 6, 15, 18 So, LCM leaves remainder 0 In the question, We are asked least number which leaves remainder 5 So, Required number will be 5 more than LCM ∴ Required number = LCM + 5 ∴ LCM = 2 × 3 × 3 × 5 = 90 So, Required number = LCM + 5 = 90 + 5 = 95
