Prime Numbers
How many factors does a prime number have?
Exactly two: one and itself
How many factors does a composite number have?
More than two
What do the A and S in GEMDAS stand for?
Addition and Subtraction
13 x 12
156
2, 4, 16, 18, 22, 26, 34, 38
are all examples of what kind of number?
Even numbers
Which number is prime?
12, 15, 17, 18
17
Which number is composite?
2, 5, 8, 11
8
What does the M and D in GEMDAS stand for?
Multiplication and Division
If a teacher has 22 students, and they each have a box of 14 pencils, how many pencils total does the class have?
308
What are the factors of 12?
1, 2, 3, 4, 6, 12
Which numbers are prime?
21, 23, 25, 27, 29
23 and 29
Which numbers are composite?
31, 33, 35, 37, 41
33 and 35
What does the G in GEMDAS stand for?
Grouping symbols
23 x 44
1,012
What are the first four multiples of 13?
13, 26, 39, 52
Is the sum of these two prime numbers, 11 + 13, prime or composite?
24 is composite
Is the sum of these two composite numbers, 22 + 15, prime or composite?
37 is prime
22 + 3 x 5 - 7
30
Johnny buys a pack of 36 Pokemon cards for the each of the 46 students in his grade. How many Pokemon cards are there in all?
1,656
What are the factors of 48?
1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Which of these numbers is prime?
92, 93, 95, 97, 99
97
Which of these numbers is composite?
79, 83, 87, 89
87
(8 + 5 - 6) x (25 - 14)
77
76 x 52
3,952
What are the first four multiplies of 24?
24, 48, 72, 96