Factors
Which is a factor of 15?
A. 4, B. 14, C. 5, D. 2
C. 5
List the first 3 multiples of 4.
4, 8, 12
Prime-only 2 factors 1x2
What is 7x7?
49
Which is NOT a factor of 27?
A. 2, B. 3, C. 9, D. 1
A. 2
Which is a multiple of 3?
A. 26, B. 35, C. 39, D. 56
C. 39
Which of the number is a composite number?
2, 3, 5, 11, 16, 17
16
What is 4x9?
36
Which number is BOTH a factor of 18 and 36?
A. 5 B. 6 C. 8 D. 12
B. 6
Which is NOT a multiple of 4?
A. 14, B. 16 C. 20, D. 36
A. 14
Which TWO numbers below are prime?
5, 8, 15, 21, 27, 31
5 and 31
What is 543 + 1,253?
1,796
1 x 42, 2 x 22, 3 x 14, 6 x 7
2 x 22
Is 54 a multiple of 8?
No.
All odd numbers are prime. True or false?
FALSE!!! Odd numbers can be prime or composite.
True or false. All numbers divisible by 5 must end in a 0.
FALSE...they must end in a 5 or 0.
List all of the factor pairs for 32.
HINT: There are 3 pairs.
1x 32, 2x16, 4x8
Which number is BOTH a multiple of 5 and a multiple of 6?
15, 20, 30, 55
30
Which TWO numbers below are PRIME?
51, 61, 73, 82, 95, 99
61 and 73
What is the answer to a multiplication equation called?
Factor X Factor = ??