Factors 1
1, 2, 5, 10 are factors for what number?
10
Solve.
6,742
+ 3,984
10,726
What are the factors of 18?
1, 2, 3, 6, 9, 18
The first five multiples of 3 are...
3,6,9,12,15
True or false:
Prime numbers only have two factors, 1 and the number itself.
True
1, 3, 9, 27 are factors for what number?
What is 27.
45,307
- 32,189
13,118
What are the factors of 14?
1, 2, 7, 14
The four multiples of 20 are...
20, 40, 60, 80
Maria says that the number 18 is composite. How can she prove this?
A. By showing that 18 has only two factors, 1 and 18
B. By showing that 18 has factors like 2, 3, 6, and 9 in addition to 1 and 18
C. By showing that 18 is smaller than 20
D. By showing that 18 is an odd number
B
What are the factors of 17?
1, 17
489,230
+ 245,982
735,212
Which of the following numbers has 7 as a factor?
10 15 20 21 40
21
The first 5 multiples of 9 are...
9, 18, 27, 36, 45
The number 37 is a prime number. True or False?
True
1, 3, 5, 15 are factors for what number?
15
9,321 - 5,489 = 4,831
True or False
False, 3,832
What are the factors of 30?
1, 2, 3, 5, 6, 10, 15, 30
The first four multiples of 8 are...
8, 16, 24,32
Which of the following numbers is a composite number?
A. 2
B. 7
C. 12
D. 17
C. 12
What are the factors of 20?
1, 2, 4, 5, 10, 20
769,007
- 248,284
520,723
What are the factors of 49? Prime or Composite
1,7,49 Composite
Which number is not a multiple of 5?
5, 30, 25, 52, 40
52
Maria says that the number 18 is composite. How can she prove this?
A. By showing that 18 has only two factors, 1 and 18
B. By showing that 18 has factors like 2, 3, 6, and 9 in addition to 1 and 18
C. By showing that 18 is smaller than 20
D. By showing that 18 is an odd number
B