welcome page -> Step 3: Simplifying/Reducing, Expanding, Common Denominator Page 1: Expanding Fractions - The cake must be enough for everyone Page 2: Simplifying/Reducing Fractions - Learn this magic trick! Page 3: Prime Factorization - Mona Page 4: Greatest Common Divisor (GCD) - Are Mona and Oliver dating? Page 5: Least Common Multiple (LCM) - The perfect couple Page 6: Common Denominator - Spain or Finland? Page 7: Once again the most important - Test your knowledge! Exercise 1 of 5 What is correct?For expanding you have to calculate the least common multiple (LCM) of the numerator and denominator.Expanding increases the value of a fraction.For expanding, the numerator and denominator are multiplied by the same number. The value of the fraction does not change. For expanding, the numerator and denominator are multiplied by the same number. The value of the fraction does not change..Answer 3 is correct. After the questions: Let's continue with Step 4 - Adding and Subtracting.