Topic 3 Review

Writing Expressions

100

The sum of a and 4.

a+4

200

The product of 5 and a number.

5x

300

The difference of a number and 5.

x-5

400

A number doubled.

2a

500

K less than the product of 3 and g.

3g - k

Expressions

100

Simplify this expression

x + 3x + x + 3

5x + 3

200

What is 3(x - 4) equivalent to?

3x - 12

300

What is 4(2x + 3) equivalent to?

8x + 12

400

What is an expression that is equivalent to 9x - 5x + 3x?

7x

500

What is an expression that is equivalent to 7x + 5x - 6x?

6x

Beginning of Unit Rememberings

100

The LCM for 5 and 8

40

200

The GCF for 42 and 36

6

300

Prime Factorization for 12

2² x 3

400

The GCF of 16 and 40

8

500

The LCM for 12 and 11

132

Vocabulary

100

expressions in different forms that always represent the same value

Equivalent Expressions

200

An unknown value.

Variable

300

A combination of numbers and variables separated by operation signs. Ex: 2x+3

Expression or algebraic expression

400

What property says for any numbers a, b and c,

a(b + c) = ab + ac

Distributive property

500

A numerical quantity placed before and multiplying the variable in an algebraic expression.

Coefficient

More Expressions.

100

Write an expression equivalent to 2x + 3x + 4x

9x

200

Write an equivalent expression to 2(4x + 4)

8x + 8

300

Simplify the expression 4x + 3(x + 1)

7x + 3

400

Simplify the expression 2(3x + 3) - 4

6x + 2

500

Simplify the expression x + 2 + x + 2

2x + 4