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Understanding Least Common Denominator (LCD) in Fractions

Understanding Least Common Denominator (LCD) in Fractions

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Jennifer Brown

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in finding the Least Common Denominator (LCD) of fractions?

Subtract the denominators

Add the numerators

Factor the denominators

Multiply the fractions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When determining the LCD, what should you do if a factor appears in both denominators?

Include it once in the LCD

Multiply it by itself

Ignore it

Include it twice in the LCD

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you adjust a fraction to have the common denominator?

Multiply the numerator and denominator by the missing factor

Subtract the missing factor from the denominator

Divide the numerator by the missing factor

Add the same number to the numerator and denominator

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the next step after ensuring both fractions have the same denominator?

Add the denominators

Subtract the numerators

Multiply the fractions

Combine the numerators over the common denominator

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you do if there are no common factors in the numerator and denominator?

Leave the expression as is

Divide by a common factor

Multiply by a common factor

Add a common factor

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the new problem, what is the first step to solve it?

Add the fractions

Factor the denominators

Multiply the fractions

Subtract the numerators

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a common mistake when simplifying fractions with a common denominator?

Canceling terms that are not fully factored

Adding the denominators

Multiplying the numerators

Ignoring the common denominator

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