Math 7 Lesson 5.1 Skills Check B

DEFINITIONS

Fractions that do not have the same denominator are called ____ fractions.

When adding fractions, the fractions should have THE SAME denominator.

• true

• false

We need to change the unlike fractions so they have the same denominator before we can add them.

• true

• false

To add unlike fractions, use the ____ of the original denominators as the new common denominator for each fraction.

• GCF (Greatest Common Factor)

• LCM (Least Common Multiple)