Expressions & Equations

Review

100

4x9=

36

200

what does this symbol mean <

less than

300

What is 9 divided by 0

undefined

400

What is 9²

81

500

3² +(2² x 3)=

21

Writing equations

100

3 times a number is 9 

3n = 9

200

write an equation that states nine divided by a number equals four and a half

9/n=4.5

300

Write a number from the following. Three times a number then take away two equals seven. 

3n-2=7

400

write an equation says the square of a number equals 16.

n²=16

500

Write an equation that states one hundred is two times a number plus twenty

100=n+20

Writing expressions

100

Write an expression for the product of twelve and the number n.

12n

200

write an expression that says, the product of a number and three then take away 2

3n-2

300

Write an expression for 2 less than the product of m and 5

5m-2

400

write an expression. triple the number n reduced by 10 

3n-10

500

write an expression. the product of a and b multiplied by two, take away ten

2ab-10

Solve Expressions

100

2n  for  n=2

4

200

n/3 for n= 9

3

300

2a + 3 for a=5

13

400

n/3 +5 for n=81

32

500

3ab-c, for a=4, b=2, and c=5

19

Solve Equations

100

2n=4

n=2

200

3n=27

n=9

300

n/2=45

n=90

400

3n+2=11

n=3

500

3n-60=15

n=25