Unit 1, Lesson 7
Find Factors and Multiples
Grade 4
Warm-up
Find the value of each expression mentally.
Activity 1
- For each number, complete a statement using the word “factor” and a statement using the word “multiple.”
number factor multiple 10 _____ is a factor of _____ because . . .
_____ is a multiple of _____ because . . .
7 _____ is a factor of _____ because . . .
_____ is a multiple of _____ because . . .
50 _____ is a factor of _____ because . . .
_____ is a multiple of _____ because . . .
16 _____ is a factor of _____ because . . .
_____ is a multiple of _____ because . . .
number factor multiple 35 _____ is a factor of _____ because . . .
_____ is a multiple of _____ because . . .
20 _____ is a factor of _____ because . . .
_____ is a multiple of _____ because . . .
19 _____ is a factor of _____ because . . .
_____ is a multiple of _____ because . . .
6 _____ is a factor of _____ because . . .
_____ is a multiple of _____ because . . .
- As you compare statements with your partner, discuss one thing you notice and one thing you wonder.
Activity 2
None
Student Section Summary
We used what we learned about factors, multiples, and prime and composite numbers between 1 and 100 to play games and solve problems.
We learned that numbers can share factors and multiples. Example:
- The number 2 is a factor of 6 and and also a factor of 8.
- The number 24 is a multiple 6 and also a multiple of 8.
Knowing about factors and multiples helped us answer questions such as:
- “Can we put 24 chairs in 6 equal rows? What about 7 equal rows or 8 equal rows?”
- “If there are 20 lockers in a row (numbered 1 to 20) and a student touches every fourth locker, how many lockers would they touch? Which locker numbers would they touch?”