Algebra 1 1-1 Guided Practice: Variables and Expressions

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by Matthew Richardson

| 12 Questions1

10

Problem 1 Got it? What is an algebraic expression for 18 more than a number n?

18n

18 - n

n - 18

n + 18

2

10

Problem 2 Got it? What is an algebraic expression for 6 times a number n?

Enter only the expression, in simplest form.

3

10

Problem 2 Got it? What is an algebraic expression for the quotient of 18 and a number n?

Enter only the expression, in simplest form.

4

10

Problem 2 Got it? Reasoning: Do the phrases 6 less a number y and 6 less than a number y mean the same thing? Explain.

Yes, they both mean the same thing. They can also both be represented by the expression y - 6.

No, they do not both mean the same thing. 6 less a number y can be represented by the expression 6 - y. 6 less than a number y can be represented by the expression y - 6.

5

10

Problem 3 Got it? What is an algebraic expression for 8 less than the product of a number x and 4?

x/4 + 8

8(x + 4)

8 - 4x

4x - 8

6

10

Problem 3 Got it? What is an algebraic expression for twice the sum of a number x and 8?

x + 2(8)

2x + 8

x(x + 8)

2(x + 8)

7

10

Problem 3 Got it? What is an algebraic expression for the quotient of 5 and the sum of 12 and a number x?

A

B

C

D

8

10

Problem 4 Got it? What word phrase can you use to represent the algebraic expression x + 8?

the number x less 8

the product of a number x and 8

the number x times 8

the sum of a number x and 8

9

10

Problem 4 Got it? What word phrase can you use to represent the algebraic expression 10x + 9?

the sum of ten times a number x and 9

the sum of a number x and 9 times 10

ten times the sum of a number x and 9

a number x more than the product of 10 and 9

10

10

Problem 4 Got it? What word phrase can you use to represent the algebraic expression?

the quotient of a number n and 3

the difference of a number n and 3

the sum of a number n and 3

the product of a number n and 3

11

10

Problem 4 Got it? What word phrase can you use to represent the algebraic expression 5x - 1?

the sum of 5 and the product of 1 and a number x

five times a number x less 1

five times a number x plus 1

five more than 1 times a number x

12

12

10

Problem 5 Got it? Suppose you draw a segment from any one vertex of a regular polygon to the other vertices. A sample for a regular hexagon is shown.

Use the table to find a pattern.

A

B

C

D

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