Math Review Jeopardy

Integers

100

Simplify:

-35 ÷ -7

-35 ÷ -7 = +5

Negative divided by a Negative is a POSITIVE

200

Simplify:

-4 x 4

-4 x 4 = -16

Negative times a Positive is a NEGATIVE

300

Simplify:

2 + 3 + -7 + -4 - 1

Solution:

2 + 3 + -7 + -4 - 1 = -7

400

True or False: All positive whole numbers, all negative whole numbers, and zero are integers.

True

Examples of Integers: -22, -15, 0, 8, 72

500

True or False: Absolute Value is the distance of an integer from zero on a number line.

True

|-3| = 3    |28| = 28

Fractions

100

Simplify:

11/15 - 7/15 + 4/15

11/15 - 7/15 + 4/15 = 8/15

200

Simplify:

1/5 + 3/4

1/5 + 3/4 = 

4/20 + 15/20 = 

19/20

300

Simplify:

3/4 - 3/6

3/4 - 3/6 = 

18/24 - 12/24 =

6/24 = 

1/4

400

Simplify:

2/5 x 3/4

2/5 x 3/4 =

2x3 = 6 (numerators)

5x4 = 20 (denominators)

6/20 --> 3/10

500

Simplify:

3/4 ÷ 4/5

3/4 ÷ 4/5

*reciprocal* --> flip it

3/4 x 5/4

3x5 = 15 (numerators)

4x4 = 16 (denominators)

15/16

Decimals

100

Write this decimal as a fraction (simplify if possible)

.8

80/100

40/50

8/10

4/5

200

Write this decimal as a fraction (simplify if possible)

.25

25/100

5/20

1/4

300

What percent is the following decimal?

.04

.04 = 4/100 = 4%

400

What percent is the following decimal?

.72

.72 = 72/100 = 72%

500

Order these decimals from SMALLEST to LARGEST:

1.53 , .01 , .555 , .1 , .25 , 2.02

.01 , .1 , .25 , .555 , 1.53 , 2.02

Expressions and Equations

100

Simplify the expression:

2a + 5a - 4b

2a + 5a - 4b --> 7a - 4b

200

Solve the equation:

r - 7 = 13

r - 7 = 13

add 7

r = 20

300

Solve the equation:

5h = 20

5h = 20

divide by 5

h = 4

400

Solve the equation:

k/8 = 7

k/8 = 7

multiply by 8

k = 56

500

Simplify the expression:

3(c+4)

3(c+4) --> 3c + 12

Money

100

You find a quarter, 2 dimes, and 3 nickels under the couch. How much money did you find?

Quarter: 25¢

Dime: 10¢ --> 2 x 10 = 20¢

Nickel: 5¢ ---> 3 x 5 = 15¢

25¢ + 20¢ + 15¢ = 60¢

200

If Sarah makes $15 an hour and works 5 hours a day, how much money does she make in a day (before taxes)?

$15 x 5hr = $75

300

Stefanie makes $10 an hour babysitting. In July, she babysat for a total of 10 hours a week. How much money did she make in July?

($10 x 10hr) x 4 weeks = $400

400

Mrs. Carmichael bought a $9 drink at Scooters and left a 20% tip. How much money did Mrs. Carmichael spend at Scooters?

$9 x .2 = $1.80 (tip)

$9 + $1.80 = $10.80

Add, because it is a tip!

500

Mrs. Kesler bought a $40 sweater at Target with a 15% off coupon. How much money will Mrs. Kesler pay for her sweater (before taxes)?

$40 x .15 = $6

$40 - $6 = $34

Subtract, because it is a discount!