Factors and Multiples
What are all of the factors of 12?
1, 2, 3, 4, 6, 12
Prime or composite?
25
Composite. 25 has many factors, including: 1, 5, 25!
Write two equivalent fractions
1/3
Answers may vary.
Ex) 2/6, 3/9, 4/12, 5/15, 6/18, 7/21, etc.
Put this fraction into simplest form.
5/10
1/2
The greatest common factor is 5.
>, <, or =
2/3 O 6/9
2/3 = 6/9
Is 60 a multiple of 6?
Yes! If you count by 6, you will land on 60. Therefore, it IS a multiple of 6!
Prime or composite?
7
Prime! The only factors of 7 are 1 and 7.
Write two equivalent fractions.
2/5
Answers may vary.
Ex) 4/10, 6/15, 8/20, 10/25, 12/30, etc.
Put this fraction into simplest form.
5/6
5/6!
5/6 is already in simplest form. Their great common factor is 1.
>, <, =
3/4 O 1/3
3/4 > 1/3
What are all the factors of 20?
1, 2, 4, 5, 10, 20
Prime or composite?
29
Prime! The only factors of 29 are 1 and 29!
Which two fractions are equivalent?
1/4 3/12 2/6
1/4 and 3/12
This is a selfie! 3 goes into its self once, and into 12 four times (1/4).
Put this fraction into simplest form.
15/25.
3/5!
The great common factor of 15 and 25 is 5!
>, <, =
5/8 O 2/3
5/8 < 2/3
Is 30 a multiple of 7?
No! If you count by 7's, you will NOT land on 30, you will land on 28. Therefore, 30 is NOT a multiple of 7.
Prime or composite?
22
Composite! 22 has many factors, including: 1, 2, 11, and 22!
Which two fractions are equivalent?
3/5 6/8 6/10
3/5 and 6/10! If you multiply 3/5 by 2 on your numerator and denominator, you will get 6/10!
How do you know a fraction is in simplest form?
When the G.C.F. (Greatest common factor) is a 1.
Put these fractions in order from least to greatest.
4/6, 1/3, 3/3
1/3, 4/6, 3/3
List 5 multiples of 10.
10, 20, 30, 40, 50...etc.
Prime or composite?
36.
Composite! 36 has many factors including 1, 2, 3, 4, 6, 9, 12, 18, and 36!
Find the unknown number.
7/10= ?/100
70! 7/10 was multiplied by 10 on the numerator and denominator!
Put this fraction into simplest form.
50/100.
1/2.
The greatest factor between 50 and 100 is 50! This is also a halfie, because 50 is half of 100!
Put these fractions in order from least to greatest.
3/5, 2/4, 1/3
1/3, 2/4, 3/5