GRADE 8 MATH JEOPARDY!

LIKE TERMS

100

combine like terms: 6a + 4a + 4b + 7

10a +4b+ 7

200

Combine like terms: k + 3n - 2n + 4k

5k + n

300

Combine like terms: 4(y + 9) - 3y

y + 36

400

Combine like terms and solve for x: x + 3x = 48

x = 12

500

Solve this expression: 14a + 42 - 7a = 0

a = -6

ORDERED PAIRS

100

In an ordered pair, which number equals x and which number equals y?

x is the first number in the pair; y is the second number.

200

For x = y/4 is (4,16) an ordered pair?

Yes

300

For y = 5 + 3x is (3,7) an ordered pair?

No

400

For y = 3x, when x =4, what is the ordered pair?

(4, 12)

500

For x= y/2.5, when x =10, what is the ordered pair?

(10, 25)

SCIENTIFIC NOTATION

100

Write 6.12 x 10² in standard notation

612

200

Write 0.00852 in scientific notation

8.52 x 10^-3 

300

Write 12,000,000 in scientific notation

1.2 x 10⁷

400

The population of Taiwan is 2.211325 x 10⁷. Write this in standard notation.

22,113,250

500

The mass of the earth is 5,980,000,000,000,000,000,000,000 kg. Write this in scientific notation.

5.98 x 10²⁴

EQUATIONS AND INEQUALITIES

100

Solve for x: x - 9 = 2

x = 11

200

Write an expression to represent : x is greater than 11

x > 11

300

Solve for x: x/4 + 7 = 3

x = -16

400

Write this in words: 17 < 24

Seventeen is less than 24

500

Write an equation to represent the change (x) in the population of Memphis between 1960 (550,000) and 1990 (725,000)

x = 725,000 - 550,000

ALGEBRA TOOLBOX

100

What is another name for the longest side of a right triangle?

Hypotenuse

200

What is the equation for the Pythagorean Theorem?

a² + b² = c²

300

A 12 oz container of soda has 180 calories. How many calories are in one ounce of the soda?

15

400

Name a ratio that is equivalent to the ratio 2/3

Possibilities: 4/6, 6/9, 8/12, etc

500

On a map, the distance between Charleston and Mt. Pleasant is 3.2 cm. The scale is 1 cm = 25 mi. What is the actual distance between the two towns?

80 mi