Subtracting Unlike Fractions

This video tutorial provides a step-by-step guide on how to subtract fractions with different denominators. It begins with identifying the need for a common denominator, followed by finding it through listing multiples. The tutorial then explains how to rename fractions using the common denominator, perform the subtraction by subtracting numerators, and finally, simplify the resulting fraction if necessary. The video is designed to be a refresher for learners of all ages and educational levels.

What is the first step in subtracting fractions with different denominators?

• Add the fractions

• Multiply the fractions

• Find a common denominator

• Subtract the numerators directly

How can you find a common denominator for two fractions?

• By dividing the numerators

• By listing multiples of each denominator

• By adding the numerators

• By subtracting the denominators

When renaming a fraction with a common denominator, what must you do to the numerator?

• Add it to the denominator

• Subtract it from the denominator

• Multiply it by the same factor as the denominator

• Divide it by the new denominator

What is the result of subtracting 5 from 12 when the fractions have a common denominator of 20?

• 12/20

• 5/20

• 7/20

• 17/20

When is a fraction considered simplified?

• When the numerator is zero

• When the numerator and denominator have no common factors other than one

• When the denominator is a prime number

• When the numerator is larger than the denominator