Mastering GCF and LCM Word Problems

What page of the workbook are we starting on today?

• Page 12

• Page 10

• Page 8

• Page 5

What is the key word in the problem that indicates we need to find the greatest common factor?

• Sum

• Most

• Least

• Equal

What are the first two factors of any number?

• 1 and 2

• 1 and itself

• 2 and itself

• 1 and 3

Tags

CCSS.4.OA.B.4

Which of the following is a factor of 49?

• 14

• 7

• 3

• 2

Tags

CCSS.4.OA.B.4

What is the greatest common factor of 49, 42, and 21?

• 21

• 1

• 3

• 7

How often does Inez water her plants?

• Every 15 days

• Every 2 days

• Every day

• Every 5 days

Tags

CCSS.RI.6.5

CCSS.RI.8.3

CCSS.RI.8.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

How often does Inez trim her plants?

• Every 2 days

• Every day

• Every 15 days

• Every 5 days

What mathematical concept helps us determine when Inez will water and trim her plants on the same day?

• Addition

• Subtraction

• Least common multiple

• Greatest common factor

What is the least common multiple of 2 and 15?

• 30

• 20

• 15

• 45

In how many days will Inez water and trim her plants on the same day?

• 15 days

• 20 days

• 30 days

• 25 days