Understanding Fractions and Finding the Lowest Common Denominator

Understanding Fractions and Finding the Lowest Common Denominator

Assessment

Interactive Video

Mathematics

6th - 8th Grade

Hard

Created by

Jennifer Brown

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary goal of the video tutorial?

To find the lowest common denominator

To learn multiplication tables

To teach how to add fractions

To solve algebraic equations

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to find the lowest common denominator when adding fractions?

It changes the value of fractions

It allows fractions to be added directly

It simplifies the fractions

It is only necessary for subtraction

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example of adding 1/3 and 2/5, what is the lowest common denominator?

30

5

10

15

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in finding the LCD using prime factorization?

Divide the numerators

Prime factor each denominator

Multiply the denominators

Add the fractions

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When prime factors have different exponents, which exponent should be used in the LCD?

The sum of the exponents

The highest exponent

The average of the exponents

The smallest exponent

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example of 1/4 + 3/10, what is the LCD?

20

10

40

30

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the prime factorization of 64?

2^6

8^2

4^3

16^2

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