Prime and Composite
Is 2 prime or composite? How do you know?
2 is prime
Which of the following numbers are multiples of 5?
15, 22, 75, 19, 40
15, 75, 40
Bridget has 86 cat treats that she needs to share equally between 2 cats. How many cat treats does each cat get?
43 cat treats
250 divided by 5
50
20 x 40
800
Is 13 prime or composite? How do you know?
13 is prime.
Which of the following numbers are multiples of 4?
7, 16, 22, 36, 38
16, 36
A movie is 186 minutes long. Patricia wants to watch is equally over three days. How many minutes will she watch each day?
62 minutes each day.
843 divided by 4
210 r 3
50 x 60
3,000
Is 32 prime or composite? How do you know?
32 is composite.
Which of the following numbers are multiples of 3?
21, 1, 8, 33, 37
21, 33
107 students are going on a field trip. Each car can fit 5 people, not including the driver. How many cars will they need in order to take all 107 students?
22 cars total. 21 one of the cars will have 5 students in them, the final car will only have 2 students in it.
365 divided by 7
52 r 1
50 x 21
1,050
Is 50 prime or composite? How do you know?
50 is composite?
Which of the following numbers are multiples of 9?
87, 90, 18, 34, 36
90, 18, 36
Ms. Jones counted her pencils and noticed that she had 246 pencils. She has decided that each student needs 3 pencils. How many students does she have pencils for?
83 students
5,232 divided by 3
1,755
43 x 20
860
Is 87 prime or composite? How do you know?
87 is prime.
Which of the following numbers are multiples of 8?
60, 56, 46, 40, 32
56, 40, 32
5 friends go on a trip to the beach for a week. In total they spent $ 4,065. If each friend pays the same amount, how much does each person owe?
$ 813
6875 divided by 2
3,437
24 x 52
1,248