Adding Fractions with Unlike Denominators
Authored by natalie richardson
Mathematics
7th Grade
CCSS covered
Used 15+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
If you have fractions with denominators 3 and 4, what is the least common multiple (LCM) of 3 and 4?
7
10
15
12
Tags
CCSS.4.OA.B.4
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
When adding fractions with unlike denominators, what should you do to make the denominators the same?
Divide the denominators by their greatest common factor
Find the least common multiple (LCM) of the denominators and rewrite each fraction with the LCM as the new denominator.
Subtract the numerators and keep the denominators the same
Multiply the numerators and denominators together
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
If you have 1/3 and 1/4, what is the common denominator you should use to add them?
7
15
12
10
Tags
CCSS.4.NF.A.2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
After finding the common denominator, what should you do with the numerators of the fractions?
Divide the numerators
Multiply the numerators
Perform the operation (addition or subtraction) on the numerators after finding the common denominator.
Ignore the numerators
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
If you have 2/5 and 3/7, what is the common denominator you should use to add them?
35
25
42
49
Tags
CCSS.4.NF.A.2
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
When adding fractions with unlike denominators, should you change the numerators or denominators to make them the same?
Change the denominators
Change the numerators
Multiply the fractions
Change both numerators and denominators
Tags
CCSS.7.NS.A.1C
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the final step in adding fractions with unlike denominators?
Find the least common denominator
Add the numerators
Multiply the denominators
Simplify if needed
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
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