Patterns
____, 20 , 30, ____, ____, 60
10, 40, 50
List the factors for 3
1, 3
What is a prime number?
A whole number greater than 1 that cannot be exactly divided by any whole number other than itself and 1
The library is being relocated. The librarians are busy organizing the books.Three boxes filled with fiction books and two boxes filled with reference books were just delivered. If each box is filled with 120 books, how many fiction books are there?
There are 360 fiction books
A printing company has 6 printing machines. Each printing machine costs $4,500. How much did the company pay for the machines?
The company paid $27,000 for the machines
6 , 12,___, 24 ,____, ____ 42
18, 30, 36
List the factors for 15
1, 3, 5, 15
What is a composite number?
There were 445 non-fiction books but 83 went missing and 45 were transferred to another library. How many non-fiction books are left?
There are 317 non-fiction books left.
All 6 printing machines together can print 222 pages in a minute. How many pages can each machine print per minute?
Each machine can print 37 pages per minute
2 , 4 ,___,10 , 12 ,___
6, 22
List the factors for 20
1, 2, 4, 5, 10, 20
Is 7 a prime or composite number? Why?
7 is a prime number because it can only be divided by 1 and itself
According to the library system, there are 238 new patrons, 145 inactive patrons and 673 active patrons. How many patrons are there in total in the library system?
There are 1,056 patrons using the library system.
There are 3 teams of maintenance staff. If each team take 8- hour shifts and has 4 members, how many maintenance staff are there?
There are 12 maintenance staff.
27 , ____ , 45 , 54 , ____ , ____
36, 63, 72
List the factors for 16
1, 2, 4, 8, 16
There are 2,475 books in total in the library. 592 books are on loan and 137 books are missing. Out of the 592 books, 74 books are late. How many books are there in the library?
There are 1,746 books in the library.
There are 5 salespersons and 22 clients. If each client only deals with one salesperson and the clients are divided as equally as possible among the salespersons, how many salespersons are responsible for 5 clients?
2 salespersons are responsible for 5 clients.
64, ___, 48, 40, ___, 24, 16, ___
56, 32, 8
List the factors for 50
1, 2, 5, 10, 25, 50
What is the only number that is both even and prime?
2
Write an equation using “x” and then solve the equation. The library bought 115 new fictions, 38 non-fiction and x new reference books. They ordered 174 books in total.
115 + 38 + x = 174
153 + x = 174
x = 21
The library bought 21 new reference books.
Write an equation using “x” and then solve the equation. Three orders are to be done today. Each order involves printing x pages. As a result, there are total of 9900 pages to be printed today.
3x = 9,900
x = 3,300
Each order has 3,300 pages