GRADE 8 MATH JEOPARDY!

LIKE TERMS

1

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

10a +4b+ 7

2

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

5k + n

3

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

y - 36

4

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

x = 12

5

Solve this expression: 14a + 4b + 7

Can't be solved; not an equation, and already in simplest terms

ORDERED PAIRS

1

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.

2

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

Yes

3

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

No

4

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

(4, 12)

5

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

(10, 25)

SCIENTIFIC NOTATION

1

The number of significant figures in 0.043

2

2

The number of significant figures in 0.000000000002

1

3

The number of significant figures in 609210

5

4

The population of Taiwan is 2.211325 x 10 to the seventh power. Write this in standard notaion.

22,113,250

5

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

5.98 x 10 to the twenty-fourth power

EQUATIONS AND INEQUALITIES

1

Solve for x: x - 9 = 2

11

2

Write an expression to represent : x is greater than 11

x > 11

3

Solve for x: x/4 + 7 = 3

x = -16

4

What property is used first, when solving this equation:

5x+12=27

Subtraction Property of equality

5

Name the two of the properties used to solve: 

 7/x - 14 = 28

-Addition Property of Equality

-Multiplicative Property of Equality

ALGEBRA TOOLBOX

1

Simplify then solve:

45/81 * 63/60

7/12

2

simplify then solve:

4/5 * 30/40

3/5

3

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

15

4

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

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

5

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