Prime/Composite
Which of these numbers is prime?
A. 9
B. 10
C. 11
D. 12
C. 11
There are no factors that can multiply to get 11
A number that is a multiple of 2, ends in which numbers?
0, 2, 4, 6, 8
Which number is a factor of 12?
A. 5
B. 6
C. 7
D. 9
B. 6 is a factor of 12
6x2=12
A frog jumps forward three spaces each time. The frog lands on: 2, 5, 8, 11. What number will the frog land on next?
14
Input- 4 Output- 6
Input 6- Output- 8
Input- 8 Output- ???
10
Is 15 prime or composite? Explain why?
15 is composite. It has more than 2 factors.
6, 12, 18, 24
List all factors of 14.
1,2,7,14
The temperature drops by 10° each hour. The temperatures are 90, 80, 70, 60. What will the temperature be after the next hour?
50
Input- 3 Output- 18
Input- 5 Output- 30
Input- 8 Output- ?
Input- 10 Output- 60
What rule is used to find the output number?
A. add 15
B. multiply by 6
C. multiply by 5
D. add 30
B. multiply by 6
Which number is composite?
A. 13
B. 17
C. 19
D. 21
21 is composite, it has more than 2 factors
Which number is a multiple of 3 and 4?
A. 12
B. 18
C. 20
D. 22
A. 12 is a multiple of 3 and 4
How many factors does 16 have?
16 has 5 factors
1,2,4,8,16
A pattern starts at four and doubles each time.
4, 8, 16 ___
What comes next?
A.20
B.24
C.32
D.64
C.32
16+16=32
The expression represents the total number of stickers based on the number of pack packs, P.
P x 4
Which pattern represents the number of stickers for 1, 2, 3, and 4 packs?
A. 4, 8, 12, 16
B. 1, 4, 9, 16
C. 4, 16, 64, 256
D. 2, 6, 10, 14
A. 4, 8, 12, 16
List all prime numbers between 20 and 30.
23, 29
Is 48 a multiple of 6?
Yes, because 6x8=48
Which number is not a factor of 48?
A.6
B.8
C.12
D.18
D. 18
A pattern follows this rule: subtract nine each time. The pattern starts at 82. Write the next four numbers in the pattern.
73,64,55,46
Which number between 40 and 50 has exactly 2 factors?
41, 43 or 47
12, 24, 26, 48, 60
List all the factors of 22
1, 22
A pattern starts at three and increases by multiplying by 2. Which list shows the pattern correctly?
A. 3, 6, 9, 12.
B. 3, 6, 12, 24
C. 3, 5, 10, 20
D. 3, 6, 10, 20
B. 3, 6, 12, 24