Factors and Multiples

Question 1: Diagram below is part of a number line. What is the value of P and of Q? Solution: Each gradation on the number line represents 4 units. Thus P = –12 and Q = 12. Question 2: Diagram below shows a sequence of numbers. K and M represent two numbers.     19     … Read more

Question 9: Find the lowest common multiple (LCM) of 8, 12 and 15. Solution: Question 10: Find the highest common factor (HCF) of 26, 52 and 156. Solution: Question 11: Given that (m + 5) is the highest common factor of 81 and 108, find the value of m. Solution:

Question 5: State all the prime factors of 156. Solution: Factors of 156: 1 × 156 2  × 78 3  × 52 4 × 39 6 × 26 12 ×  13 2, 3 and 13 are the prime factors of 156. Question 6: State all the prime factors of 182. Solution: Factors of 182: 1 × 182 2  × 91 7  × 26 13  × 14 2, 7, 13 and 91 are the prime factors of 182. Question 7: State the first two common multiples of 3, 5 and 6. Solution: Multiples … Read more