Rational Numbers and Equations

Multi-Step Expressions

100

On the board ------>

4/5 or 0.8

200

On the board ---------->

3

300

On the board --------->

3.9

400

On the board --------->

-10.8

500

On the board -------->

-35.2

Mult/Div Rational Numbers

100

3(-2.2)

-6.6

200

1/8 divided by 3/4

1/6

300

-12.5(-2.8)

35

400

4/5(-2/8)

-1/5

500

18.8(-4.56)(-6)

514.368

Sales Tax

100

Subtotal: $3.75

Sales Tax Rate: 5%

Sales Tax: ________

18 cents or 19 cents

200

Subtotal: $8.24

Tax Rate: 6%

Total Cost: ________

$8.73

300

Subtotal: $26

Tax Rate: 8.2%

Total Cost: ___________

$28.13

400

Items bought: $4.25, $6.17, $20

Tax Rate: 9%

Sales Tax: _________

$2.73 or $2.74

500

Items: $13.25, $50, $7.25

Tax Rate: 5.2%

Total Cost: _________

$74.16 or $74.17

One Step Equations

100

5x = 20

x = 4

200

x + 25 = 150

x = 125

300

x - 17 = -5

x = 12

400

x / 25 = 4

x = 100

500

x + 24 = 4

x = -20

Two Step Equations

100

4x + 5 = 13

x = 2

200

10x - 8 = 72

x = 8

300

4y - 15 = -31

x = -4

400

3t + 45 = 0

t = -15

500

25r - 4 = 83.5

r = 3.5