Chapter 4- GCF & LCM Question Preview (ID: 12060)


Review GCF And LCM... TEACHERS: click here for quick copy question ID numbers.

What do the letters GCF stand for?
a) Greatest Common Fraction
b) Greatest Counting Fraction
c) Greatest Common Factor
d) Greatest Counting Factor

When simplifying fractions, what is the benefit of finding the GCF to break them?
a) You can break/simplify the fraction to lowest terms in one step.
b) To show off your amazing prime factor tree skill.
c) You do not use GCF to simplify fractions.
d) To find the LCM.

What are the two methods to find GCF?
a) Flip/Flop Listing & Counting
b) Prime Trees and Counting
c) Counting and Multiplying
d) Flip/Flop Listing and Prime Trees.

Find the GCF of 15 and 45
a) 5
b) 1
c) 45
d) 15

Find the GCF of 27 and 45
a) 1
b) 3
c) 135
d) 9

Simplify 27/45 using the GCF. What is the resulting lowest terms fraction?
a) 1/3
b) 5/3
c) 3/5
d) 1/5

What do the letters LCM stand for?
a) Lowest Counting Multiplier
b) Least Common Member
c) Least Common Multiple
d) Largest Common Multiple

What phrase did we come up with to remind us how LCM trees are different from GCF trees?
a) Leftovers Count Money
b) Largest Counters Move
c) Leftovers Can Minus
d) Leftovers Can Multiply

Find the LCM of 26 and 39
a) 13
b) 78
c) 3
d) 6

Find the LCM of 25 and 30
a) 150
b) 5
c) 300
d) 25

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