The Number System

Add and Subtract

100

What is -14 + (-9)

-23

200

Solve: 5.5-8.2

- 2.7

300

What is the distance between -3 and 7 on a number line.

10 Units

400

Solve: -12 + 15 - 4 + 2

1

500

Explain: Why does a- (-b) become a + b?

Subtracting a negative is adding the opposite.

Multiply and Divide

100

Find the product of -5 and -12

60

200

Simplify: -4/5 divided by 1/2

-1.6 or -8/5

300

Solve: (-2)(-3)(-4)

-24

400

Convert: -11/4 to a decimal.

-2.75

500

Solve: -0.5 x (4.2 divided by -0.2)

10.5

Unit Rates

100

A turtle crawls 1/8 mile in 1/2 hour. What is the speed in mph?

1/4 mph

200

2.5 pounds of apples cost $5.00. What is the price per pound?

$2.00 per pound

300

A faucet drips 2/3 gallons every 1/4 hour. What is the rate per hour?

2 2/3 gph

400

1/2 cup sugar for every 3 cups of flour. What is the unit rate of 1 cup of sugar per 1 cup of flour?

1/6 cup sugar

500

Deb reads 3/4 pages in 2/3 of a minute. How many pages can Deb read in 1 minute. 

1 1/8 pages

Proportions

100

Is (2,4) and (3,6) proportional?

Yes. (6/4=1.5 and 3/2=1.5). 

200

Identify K in the table: x=2, y=10, x=4, y=20

K=5

300

Write an equation for a line passing through (0,0) and (5, 25)

Y=5x

400

If Y=3x, then what is y when x is 12.5?

37.5

500

On a graph, what does the point (1, 5.5) represent?

Cost per item is $5.50

Percents

100

What is 15% of $80?

$12

200

A $60 item is 20% off. New price?

$48.

300

Find the total. $40 meal with a 18% tip. 

$47.20

400

A $200 phone has 7% tax. What is the final cost?

$214

500

I= Prt: Find the interest on $500 at a 4% increase for 2 years.

$40 interest. (P=$540)