Reciprocals
A reciprocal is a number flipped over. Multiplying by a reciprocal gives 1.
Do this: Read the concept below, then try the quiz or activity.
Lesson 37 of 215
Concept
Reciprocal of a/b is b/a.
Examples: - reciprocal of 3/5 is 5/3 - reciprocal of 7 is 1/7 - reciprocal of 1/4 is 4
Check: 3/5 x 5/3 = 15/15 = 1
Reciprocals are essential in fraction division: a/b ÷ c/d = a/b x d/c
Try it
Practice: Reciprocals.