Multiples
What are the first 3 multiples of 5
5, 10, 15, 20
4 X 7
28
A rectangular prism has the dimensions (2X3)X 5. What is the volume of the prism?
30 units cubed
40 divided by 8
5
List the factors of 16
1, 2, 4, 8, 16
List the first 4 multiples of 3. (skip count by 3's)
3, 6, 9, 12, 15
(2X8) X 10
160
Why is volume expressed as units 3? (units cubed)
Because there are three dimensions.
36 divided by 4
9
What is a composite number?
A number with more than two factors.
What is the definition of a prime number?
A number with only two factors. One and itself.
2X(3X2) + 3X(3X5)
57
Rectangular Prism Photo Edition
How many cubes are there?
32
A rectangular prism has a total of 48 cubes. Each layer has 6 cubes. How many layers does it have?
8
List all the factors of 24. (What numbers can be multiplied to equal 24?)
1, 2, 3, 4, 6, 8, 12, 24
Name two different prime numbers
Many responses will work here. 5, 11, 13, 17,
Paul had 6 boxes and each box had three erasers. How many erasers were there in all?
18
Composite Rectangle Photo Edition
How many cubes are there?
48
Brownies will be served on 4 plates. There are 42 brownies to be placed evenly on the plates. How many brownies will be on each plate?
10.5 or 10 and a half on each plate.
Which of these numbers are factors of 36?
There can be more than one number.
4, 5, 6, 8, 10, 12
continue the pattern
_____, _____, 12, 16, 20, _____, ______
4, 8, 12, 16, 20, 24, 28
51 X 12
612
Composite Rectangle Photo Edition
How many cubes are there?
32
The school was going on a field trip and will take vans that can only transport 8 students. There are 45 kids in the school. How many vans will the school need for the trip?
6 vans
Is the number 2 a prime of composite number?
prime! It only has two factors.