Finding GCF and LCM of Numbers

What is the first step in finding the greatest common factor (GCF) and least common multiple (LCM) of two numbers?

• Draw an upside-down division sign

• Subtract the smaller number from the larger number

• Write the numbers in a list

• Multiply the numbers together

Which number is a common factor of both 32 and 48?

• 2

• 3

• 5

• 4

Tags

CCSS.4.OA.B.4

How many times can 4 be divided into 32?

• 9 times

• 8 times

• 7 times

• 6 times

Tags

CCSS.4.NBT.B.6

What is the greatest common factor (GCF) of 32 and 48?

• 8

• 12

• 16

• 24

What shape does the multiplication of numbers form when finding the least common multiple (LCM)?

• A circle

• A triangle

• A square

• An L shape

What is the least common multiple (LCM) of 32 and 48?

• 120

• 64

• 72

• 96

What is the greatest common factor (GCF) of 24 and 36?

• 6

• 8

• 12

• 10

How many times can 12 be divided into 24?

• 1 time

• 4 times

• 2 times

• 3 times

Tags

CCSS.4.NBT.B.6

What is the least common multiple (LCM) of 24 and 36?

• 48

• 60

• 84

• 72

Which of the following is NOT a step in finding the LCM using the GCF method?

• Drawing an upside-down division sign

• Finding common factors

• Multiplying all numbers together

• Subtracting the numbers