
Adding and Subtracting with Least Common Denominator

Interactive Video
•
Mathematics
•
6th - 10th Grade
•
Hard
+2
Standards-aligned

Jackson Turner
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it useful to change fractions to have the same denominator?
To easily compare, add, or subtract them
To simplify the fractions
To convert them to decimals
To make the numerators equal
Tags
CCSS.4.NF.A.2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does LCD stand for in the context of fractions?
Largest Common Denominator
Lowest Common Denominator
Last Common Denominator
Least Common Denominator
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the least common multiple (LCM) of 12 and 8?
24
16
48
32
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert 5/12 to have a denominator of 24?
Multiply both numerator and denominator by 4
Multiply both numerator and denominator by 3
Multiply both numerator and denominator by 2
Multiply both numerator and denominator by 6
Tags
CCSS.3.NF.A.3B
CCSS.4.NF.A.1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the equivalent fraction of 3/8 with a denominator of 24?
6/24
18/24
12/24
9/24
Tags
CCSS.3.NF.A.3B
CCSS.4.NF.A.1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't you directly add 1/4 and 5/6?
They have different numerators
They are already simplified
They have different denominators
They are improper fractions
Tags
CCSS.5.NF.A.1
CCSS.5.NF.A.2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the quick common denominator for 1/4 and 5/6?
12
24
30
18
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