Factors
Give all the factors of the number 8
1, 2, 4, 8
Is 7 prime or composite?
Prime
Give the first 5 multiples of 8
8, 16, 24, 32, 40
What number is a multiple of 3 and a factor of 24?
1 8 12 21 48
12
458 + 372 =
830
Which number is not a factor of 40?
8 10 2 6 20
6 is not a factor of 40
Is 9 prime or composite?
Composite
Give the first 5 multiples of 12
12, 24, 36, 48, 60
What number is a factor of 36 but not a multiple of 3?
3 4 9 12 18 36
4
817 - 284 =
533
What are all the factors of 42
1, 2, 3, 6, 7, 14, 21, 42
Is 83 prime or composite?
Prime
Which number is not a multiple of 9?
3 9 27 54
3
What number is a factor of 50 but not a multiple of 5?
2 10 25 50 42
2
4000 - 658 =
3,342
What are the factors of 86?
1, 2, 43, 86
Is 1 prime or composite?
Neither, it is special.
Which number is a multiple of 6?
2 63 32 54 1
54
What is a prime factor for 30?
1 30 3 10 15
3
Round 83,738 to the nearest hundred
83,700
What are the factors of 51?
1, 3, 17, 51
Juan says that all composite numbers are even, and all prime numbers are odd. Give examples to prove him wrong.
Teacher will judge.
Example: 2 is prime but even, 9 is composite but odd.
Which number is a multiple of both 5 and 8?
25 32 45 80 98
80
What is a prime factor for 28
1 28 14 4 7
7
Round 49,616 to the nearest thousand.
50,000