Pre Algebra Review

Solving for x

100

4x = 16

4

200

x² = 64

x= 8        x= -8

300

DAILY DOUBLE...............

2(x+4) = 12

x=2

400

16+n=25

n=9

500

9^{2 + X = 83}

x=2 

Exponents

100

When you see the following expression, what is the big number called and what is the little number on top of it called?

2⁴

Big number = base; little number = power/exponent

https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-exponents/v/introduction-to-exponents

200

Rewrite 9⁴ in expanded form

9 x 9 x 9 x 9

300

How can you rewrite the following in exponential form?

7 x 7 x 7 x 7 x 7 

7⁵

400

What is the value of: 3⁴

81

500

What is the value of:

2³ + 3² - 4²

1

https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-exponents/v/introduction-to-exponents

Order of Operations

100

Simplify the following expression:

62

https://www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-order-of-operations/v/introduction-to-order-of-operations

200

Simplify the following expression:

5

https://www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-order-of-operations/v/introduction-to-order-of-operations

300

3 + 4² * (3 + 2)

83

400

45

500

30

Math Expressions

100

A number plus 7

 x+7

200

Twice a number minus 4

2n-4

300

The quotient of a number and 5, increased by 2

n/5 + 2

400

The sum of three times a number and 8, divided by 2

3x + 8 / 2

500

Four times the sum of a number and 6, subtracted by the two squared 

4(x+6) - 2²

Find the Value

100

 If x = 4, evaluate x + 3 

7

200

If a = 2, evaluate 3a²

12

300

If b = 5, evaluate 5b + 3

28

400

MEAN DAILY DOUBLE. Take points from another team. Choose how much you want to take from another team, but if you get it wrong, you lose twice as much. 

If x = 3 and y = 2, evaluate 2x² + 3y

24

500

a = 4 and b = 3, evaluate (2a³ - 3b²) / b.

13