Math 7 Lesson 5.2 Skills Check A

Front

When subtracting fractions, what must be true about the denominators?

Back

The denominators must be the same.

Front

What is the process to subtract unlike fractions?

Back

We need to use the LCM (Least Common Multiple) of the original denominators to find the new common denominator.

Front

Back

-1 and 5/12

Front

Back

1/2

Front

Back

-1 and 3/4

Front

Define LCM in the context of fractions.

Back

LCM stands for Least Common Multiple, which is used to find a common denominator for unlike fractions.

Front

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

Back

Find the LCM of the denominators.

Front

What does it mean to express a fraction in lowest terms?

Back

It means to simplify the fraction so that the numerator and denominator have no common factors other than 1.

Front

How do you convert an improper fraction to a mixed number?

Back

Divide the numerator by the denominator to find the whole number, and use the remainder as the new numerator.

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator.