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Word Problems Involving Highest Common Factor and Lowest Common Multiple Read each question carefully and think about what the question is asking. Find the prime factors for each number
Question 1: (a) List all the factors of 10 (b) List all the factors of 15 (c) Write down all the common factors of 10 and 15. Question 2: (a) List all the factors of 12 (b) List all the factors of 18 (c) Write down all the common factors of 12 and 18. Question 3: Write down all the common factors of each of these pairs of numbers.
The factors of 56 and 84 are 1, 2, 4, 7, 8, 14, 28, 56 and 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 respectively. There are 3 commonly used methods to find the GCF of 56 and 84 - prime factorization, long division, and Euclidean algorithm.
26 wrz 2019 · The Corbettmaths Textbook Exercise on Common Factors - HCF. Welcome; Videos and Worksheets; Primary; 5-a-day. 5-a-day GCSE 9-1; 5-a-day Primary; 5-a-day Further Maths; More. Further Maths; GCSE Revision; Revision Cards; Books; Common Factors Textbook Exercise. Click here for Questions . HCF, highest. Textbook Exercise. Previous: Common ...
These word problems need the use of greatest common factors (GCFs) or least common multiples (LCMs) to solve. Mixing GCF and LCM word problems encourages students to read and think about the questions, rather than simply recognizing a pattern to the solutions.
PRACTISE NOW 10 1. Find the highest common factor of 56 and 84 using both methods. 2. Find the largest whole number which is a factor of both 28 and 70. 3. The numbers 504 and 588, written as the products of their prime factors, are 504=2^3* 3^2* 7 and 588=2^2* 3* 7^2. Hence, find the greatest whole number that will divide both 504 and 588 exactly.
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