# Number Theory - Prime Factors - GCF - LCM

Worksheet (Pre-Algebra)

## Number Theory - Prime Factors - GCF - LCM Worksheet

## Lesson:

To identify place values, to determine if numbers are palindromes, to find multiples, factors, GCF, and LCM.

## Topics:

## Number of Problems:

10

## Pages:

3

## Answer Key:

Yes

## Samples:

Tutor-USA.com Worksheet

Number Theory

1) Write down:

a. Largest 3-digit odd number with a 7 in the tens place

b. Smallest 4-digit even number with a 6 in the hundreds place

2) Which of these numbers are palindromes?

3) Write the first 6 multiples of:

4) a. find the 8th multiple of 5.

b. Which multiple of 6 is 42?

5) How could you test a number for divisibility by 18?

6) Find all factors of each number:

7) Find the GCF of:

8) Use the given prime factors to find the GCF of each pair of numbers.

10) Use the given prime factors to find the LCM of each pair of numbers.

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