Ex, Prop, Order, Equations

Expressions

100

Four greater than a number

N +4

200

Twelve times a number

12N

300

Three times the quantity of 2 and a number is 90

3(2 + N) = 90

400

(49 + N)/ 2 

The sum of 49 and a number divided by 2.

500

Double a number greater than 4 is equal to the sum of 9 and another number.

4 + 2N = (9 + R)

Properties

100

2a x 3b = 3b x 2a

Commutative Property of Multiplication

200

4 + -4 = 0

Additive Inverse of a Number

300

(2 + b) + 9 = 2 + (b + 9)

Associative Property of Addition

400

3 (6 + c) = 3 x 6 + 3 x c

Distributive Property

500

a + 0 = a.

Addition Property of Zero

One step equations

100

- 13 = C + 2

C = -15

200

6 = F/5

F = 30

300

2D = 24

D = 12

400

R / 3 = - 6

R = -18

500

- 5 = - 4 + V

V = -1

Multi step equations

100

2N - 3 = 17

N = 10

200

3(2N - 3) = 27

N = 6

300

(N - 2) / 4 = 10

N = 42

400

3(2N - 5) + 4N = 65

N = 8

500

-4N = 1/2 (-6N + 12)

N = -6

Order of Operations

100

2 - 4+ (6/2)

2 - 4 + (3)

-2 + 3

1

200

( 6 x 10 +3² ) - 8

( 6 x 10 + 9 ) - 8

( 60 + 9 ) - 8

69 - 8

61

300

(73 - 5 ² ) ÷ ( 2 + 4 )

(73 - 25 ) ÷ ( 2 + 4)

48 ÷ 6

8

400

(62 - 2 ) ÷ 30 -6²

60 ÷ 30 -6²

60 ÷ 30 - 36

2 - 36

-34

500

2 x (14 - 6 ) +3²

2 x 8 +3²

2 x 8 + 9

16 + 9

25