Tag Archives: least common denominator

The Difference Among LCM, LCD, GCD and GCF

LCM and LCD LCM means Least Common Multiple. Multiple in this context is used for integers. LCD, on the other hand, means Least Common Denominator. As we know, denominator is used in fractions. So, in 1/3 and 1/4, should we say, LCM or LCD? CORRECT STATEMENT: LCM of 3 and 4 (multiple is used for… Read More »

PCSR Civil Service Exam Review Guide 1

PCSR 2017 CIVIL SERVICE EXAM REVIEW GUIDE 1 Updated: April 25, 2017 PART I: MATHEMATICS A. GCD Videos Lesson 1: Understanding Common Divisors Lesson 2: Common Divisors and Greatest Common Divisor Lesson 3: Exercises on Getting the GCD Lesson 4: Getting the GCD by Prime Factorization Lesson 5: GCD and Reducing Fractions to Lowest Terms… Read More »

How to Get the Least Common Multiple of Numbers

In mathematics, a multiple is a product of any number and an integer. The numbers 16, -48 and 72 are multiples of 8 because 8 x 2 = 16, 8 x -3 = -48 and 8 x 9 = 72. Similarly, the first five positive  multiples of 7 are the following: 7, 14, 21, 28, 35.… Read More »

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