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Ex 3.3, 2 (a) - Chapter 3 Class 6 Playing with Numbers
Last updated at April 16, 2024 by Teachoo
Divisibility Tests - Divisibility by 4, 8
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
- Statement questions on LCM
- Statement questions on HCF
Transcript
Ex 3.3, 2 Using divisibility tests, determine which of the following numbers are divisible by 4; by 8: (a) 572 Divisibility by 4 If last 2 digits are divisible by 4 Then, number is divisible by 4 Divisibility by 8 If last 3 digits are divisible by 8 Then, number is divisible by 8 Divisibility by 8 If last 3 digits are divisible by 8 Then, number is divisible by 8 Divisibility by 4 Last 2 digits are 72 Since remainder is 0, 72 is divisible by 4 ∴ 572 is divisible by 4 Divisibility by 8 Last 3 digits are 572 Since remainder is not 0 ∴ 572 is not divisible by 8
