Equations Review

Evaluate Expressions

100

5a  

where a = -3

-15

200

3z - 4w    where z = 2 and w = -1

10

300

7 - 3x + 9x - 2y + y   where x = 9 and y = 2

59

400

-13v + 9m - 9m + 13v  where v = 0 and m = -1

0

500

12z + 94x - 5y + 15y + 22x - 13z     where x = -2, 

y = 0 and z = -1

-231

1 - step equations

100

x + 2 = 12

x = 5

200

y - 15 = 3

y = 18

300

w + -2 = -7

w = -5

400

-4b = 48

b = -12

500

p/3 = -24

p = -72

2 - step equations

100

3z + 2 = 5

z = 1

200

-5s - 6 = 34

s = -8

300

7x + 182 = -182

x = -52

400

15 - 9m = 60

m = -5

500

365 = -5 + 10c

c = 36

Multi-step equations

100

3(x-2) + 3x = 10

x = 2

200

7c - 2 + 9 = 0

c = -1

300

6 + 2(5d - 3) = 50

d = 5

400

5g - 7g + 3(2g + 8) = 60

g = 9

500

7w - (15w - 3) + 14 = 25

w = -1

Other stuff

100

What is a variable?

A letter that represents a number

200

What is the black panther's name in The Jungle Book?

Bagherra

300

What is an integer?

A positive or negative number

400

Without a calculator.....

what is 2,346 x -334?

-783,564

500

What is the difference between an equation and an expression

An equation has an equal sign, an expression does not.