Why do we need a common denominator when subtracting fractions?

Subtracting Fractions with Unlike Denominators

Interactive Video
•
Mathematics, English, Science
•
4th - 6th Grade
•
Hard

Sophia Harris
FREE Resource
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To make the numerators equal
To ensure the fractions have the same base for subtraction
To simplify the fractions
To convert fractions to decimals
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the least common multiple of 3 and 5?
10
20
15
30
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert two-thirds to have a denominator of 15?
Subtract 3 from the denominator
Add 5 to the numerator
Multiply both numerator and denominator by 5
Multiply both numerator and denominator by 3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of subtracting 10/15 and 6/15?
8/15
2/15
4/15
6/15
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the simplest form of the fraction 4/15?
3/5
4/15
1/3
2/5
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