Topic 4-2 GCF, LCM and Prime Factorization

Presentation

•

Mathematics

•

5th - 6th Grade

•

Practice Problem

•

Hard

•

CCSS

6.EE.A.1, 4.OA.B.4

Standards-aligned

Joshua Millstein

Used 94+ times

FREE Resource

10 Slides • 12 Questions

Topic 4-2 GCF, LCM & Prime Factorization

School Year 2022-2023

Essential Question

How do you find the greatest common factor (GCF) and least common multiple (LCM) of two or more numbers?

But, first, some review questions...

Multiple Choice

1.) Which value is equivalent to the expression 4⁵?

625

1024

Multiple Select

2.) Select all the expressions equal to $4^3$ .

4 x 3

4 x 4 x 4

(4 x 4) x 4

Topic Agenda

Learn about Greatest Common Factor (GCF)
Learn about Least Common Multiple (LCM)
Learn about Prime Factorization

What is the GCF?

Factors that are shared by two or more numbers are called common factors. The greatest of the common factors is called the greatest common factor (GCF). One way to find the GCF of two or more numbers is by listing factors.

Fill in the Blanks

3.) What is the GCF of 16 and 18?

Type answer...

Fill in the Blanks

4.) What is the GCF of 28 and 49?

Type answer...

Fill in the Blanks

5.) What is the GCF of 60 and 72?

Type answer...

Fill in the Blanks

6.) What is the LCM of 4 and 6?

Type answer...

Fill in the Blanks

7.) What is the LCM of 9 and 12?

Type answer...

Fill in the Blanks

8.) What is the LCM of 15 and 25?

Type answer...

Multiple Choice

A composite number ...

has more than 2 factors.

has one factor.

has at least 10 factors.

is always a really big number.

Multiple Choice

A prime number...

has one factor.

has more than 2 factors.

has 100 factors.

has exactly 2 factors: 1 and the itself.

Multiple Choice

9.) Find the prime factorization of 100 in exponential form.

10 × 10

5⁴

4 x 25

2²× 5²

Multiple Choice

10.) Find the prime factorization of 75 in exponential form.

3 × 5²

3²× 5

5 × 15

3²× 5²

Topic 4-2 GCF, LCM & Prime Factorization

School Year 2022-2023

Show answer

Auto Play

Slide 1 / 22

SLIDE

Similar Resources on Wayground

17 questions

Prime and Composite

Presentation

•

5th Grade

16 questions

5.3H Adding & Subtracting Fractions unlike denominators

Presentation

•

5th Grade

18 questions

Decimal Multiplication

Presentation

•

6th Grade

19 questions

Mixed and Improper Fractions

Presentation

•

5th Grade

19 questions

Operations with Fractions Review

Presentation

•

5th - 7th Grade

15 questions

Multiply Fractions Review

Presentation

•

5th - 7th Grade

17 questions

10-9a Categorical Data Lesson

Presentation

•

6th Grade

19 questions

Decimal Operations

Presentation

•

5th Grade

Popular Resources on Wayground

10 questions

Safety Day 2026 – Student Review

Quiz

•

9th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

12 questions

Map Skills

Quiz

•

3rd Grade

22 questions

Continents and Oceans

Quiz

•

5th Grade

15 questions

Rounding Decimals

Quiz

•

5th Grade

Discover more resources for Mathematics

25 questions

Multiplication Facts

Quiz

•

5th Grade

15 questions

Rounding Decimals

Quiz

•

5th Grade

15 questions

Mastering Multiplication Facts 1-10

Quiz

•

5th Grade

20 questions

Add and Subtract Integers

Quiz

•

6th - 8th Grade

14 questions

Explore Integers and Rational Numbers

Quiz

•

6th Grade

22 questions

Ratios and Ratio Tables

Quiz

•

6th Grade

12 questions

Calculate with Positive Rational Numbers

Quiz

•

6th Grade

10 questions

3 Digit by 2 Digit Multiplication

Quiz

•

5th Grade