Number Theory - Prime Factors - GCF - LCM
Free Pre-Algebra Worksheet - Number Theory - Prime Factors - GCF - LCM
# of Problems: 10
# of Pages: 3
Answer Key?: Yes
Sample Problems from Worksheet
(Worksheet pictures and diagrams not shown)
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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