Simplifying Fractions and Factors

In this video, Isabelle explains how to simplify a large fraction by finding the greatest common factor (GCF) of the numerator and denominator. She demonstrates the process using the number 171, identifying its factors and checking which are also factors of the larger number. The video concludes with dividing both the numerator and denominator by the GCF to simplify the fraction to its simplest form.

What is the main topic discussed in Isabelle's video?

• How to divide fractions

• How to simplify a fraction

• How to multiply fractions

• How to add fractions

What is the first step in simplifying a fraction according to Isabelle?

• Finding the least common multiple

• Finding the greatest common factor

• Adding the numerators

• Subtracting the denominators

What is the purpose of finding the greatest common factor in fraction simplification?

• To simplify the fraction

• To add the fraction

• To multiply the fraction

• To divide the fraction

Why can we skip even factors when finding factors of 171?

• Because 171 is an odd number

• Because 171 is a composite number

• Because 171 is an even number

• Because 171 is a prime number

Which of the following is a factor of 171?

• 5

• 7

• 11

• 9

Why is 5 not a factor of 171?

• Because 171 is a prime number

• Because 171 is an odd number

• Because 171 does not end in 0 or 5

• Because 171 is not divisible by 5

Which of the following numbers is not a factor of 171?

• 19

• 13

• 9

• 3

Why is 11 not a factor of 171?

• Because 1 + 1 is not equal to 7

• Because 171 is an odd number

• Because 171 is a prime number

• Because 171 is not divisible by 11

Which of the following is a correct factor pair of 171?

• 4 and 42

• 3 and 60

• 2 and 85

• 1 and 171

Which number is a common factor of both 171 and the larger number?

• 3

• 19

• 57

• 171