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Common Factors and the HCF Video 219 on www.corbettmaths.com Question 1: Martin says that 6 is a common factor of 42, 36 and 50. Is he correct? Question 2: Alannah has two lengths of ribbon. One length of ribbon is 36cm long and the other length is 45cm long. Alannah wants to cut lengths of ribbon into shorter lengths that are of equal length.
Learning Target: Find the greatest common factor of two numbers. Success Criteria: • I can explain the meaning of factors of a number. • I can use lists of factors to identify the greatest common factor of numbers.
A) What is the greatest common factor of 2 prime numbers? Since prime numbers have only 2 factors 1 and themselves B) What is the least common multiple of 3, 5, and 7?
Least Common Multiple, Greatest Common Factor, Prime Factorization. Prof. L. Fern ́andez. A number m is a multiple of a number a if m equals a times a whole number. For example, the multiples of 5 are 5, 10, 15, 20, 25, 30, . . ., and the multiples of 3 are 3, 6, 9, 12, 15, 18, . . . A number has infinitely many multiples.
Question 1: No, 6 is a common factor of 42, 36 but not 50. Question 2: 9 Question 3: He has forgot that 1 and 18 are factors of 18 and that 1 and 36 are factors of 36. 18 would actually be the HCF. Question 4: For example, 12 and 9. Question 5: For example, 40 and 8. Question 6: For example, 5 and 8.
The largest common factor of two or more whole numbers is called the greatest common factor, and is abbreviated by GCF. The greatest common factor of a collection of whole numbers is useful in working with fractions (which we will do in [link]).
27 Μαρ 2022 · Definition: Common Factor. A common factor of two numbers is a number that divides evenly into both numbers. For example, 5 is a common factor of 15 and 20, because \(15\div 5=3\) and \(20\div 5=4\). Both of the quotients, 3 and 4, are whole numbers. The factors of 15 are 1, 3, 5, and 15. The factors of 20 are 1, 2, 4, 5, 10, and 20.
