Factors
Name the 2 factors of the number 7.
1 and 7
List the first two multiples of the number 5.
5, 10
What is the equation for:
40 pencils are 5 times the 8 pencils on the teacher's desk.
8 x 5 = 40
Write and solve an equation that represents the statement.
To find 25 x 12, I double 25 and halve 12.
(25 x 2) x (12 / 2) = 300
Find the volume of a box with the follow dimensions.
5 x (2 x 18)
180 units cubed
Name the 4 factors of the number 10.
1, 2, 5, 10
List the first three multiples of the number 12.
12, 24, 48
Write an equation for:
Cindy is 10 years old. Cindy's grandpa is 4 times older than Cindy. How old is Cindy's grandpa?
10 x 4 = 40
Cindy's grandpa is 40 years old.
Write and solve an equation that represents the statement.
To solve 14x16, I double and halve.
(14 x 2) x (16 / 2) =224
Find the volume of a box with the following dimensions.
area of the base: 24
height: 3
72 units cubed
What is a number with only 2 factors, itself and 1 called?
A prime number
What is a multiple?
Making more of a number. Example: 4, 8, 12, 16 ....
Write an equation for:
Billy picked 24 blueberries. That was 6 times as many blueberries as his sister Sue. How many blueberries did his sister Sue pick?
24 divided by 6 = 4
Write and solve an equation that represents the statement.
To find 10 times 34, I multiply 10 times 30 and add it to 10 times 4.
(10 x 30) + (10 x 4) = 340
Write an equation for the volume of a box with the following dimensions.
length: 4
width: 6
height: 12
( 4 x 6) x 12 = 288 units cubed
Finish the sentence: The number 17 is a ________ prime/composite number because __________.
The number 17 is a prime number because it only has two factors; itself and 1.
What two numbers share the multiple of 20?
Hint: If you skip count by ____ and _____ you will land on 20.
4 and 5 or 2 and 10
Choose two equations that match the story problem.
Matt has 15 crayons. That is 3 times as many as his partner. How many crayons does his partner have?
A. 15 = 3 x c
B. 15 x 3 = c
C. 15 - 3 = c
D. 15 divided by c = 3
A. 15 = 3 x c
D. 15 divided by c = 3
Write and solve an equation that represents the statement.
To find 11 times 26, I multiply 10 times 26 and add it to 1 x 26.
(10 x 26) + (1 x 26) = 286
Find the volume of a box with the following dimensions.
(4 x 5) x 10
200 units cubed
All even numbers are composite except for this number.
The number 2
If there are 50 multiples of the number 2 from 0 to 100, how many multiples of the number 4 are there from 0 to 100?
25
Write an equation for:
Larry bought a game and a baseball bat. The baseball bat cost $32. The game cost $8. How many times more than the game did the baseball bat cost?
$32 = $8 x 5 or $8 x 5 = $32
Write and solve an equation that represents the statement.
To find 43 times 9, I multiply 43 times 10 and remove 1 group of 43.
(43 x 10) - (43 x 1) = 387
If a box has a volume of 60 what would the dimensions be?
4 x 3 x 5