Pre-Algebra Chapter 1 Suggestions

Areas of Improvement for Chapter 1

Student Work Sample

• problems are numbered

• calculations are shown neatly, step by step

• picture/scan is clear and readable

Expressions and Equations

• expressions DO NOT have equal signs; equations do

• multiplying a number and a variable: 3y; 7.2n; 9x=72

• quotients can be written as fractions, ex. quotient of a number and four: n/4; quotient of fifty-six and eight: 56/8

Open Ended

Due to gravity, objects weigh three times as much on Earth as they do on Mercury. Suppose the weight of an object on Mercury is w. Write an expression for the object's weight on Earth.

Open Ended

Write an algebraic expression for "seven increased by the quotient of a number and eight."

Multiple Choice

What is the solution of 7 = 4w - 29?

• 8

• 9

• 10

Multiple Choice

State the domain of the relation shown in the graph.

• {0, 1, 4, 5, 8}

• {A, G, P, S, Z}

• {0, 1, 2, 4, 5}

• {1, 2, 5, 6, 7}

Properties

• Commutative Property: The order of the numbers does not change the sum or product. *Think: COMMUTE means to move or change location. ex. 4 x 7= 7 x 4; (23 + 15) x 7 = 7 x (23 + 15)

• Associative Property: The groupings of numbers does not change the sum or product. *Think: ASSOCIATE means join together, connect, or combine. ex. (3 x 4) x 5 = 3 x (4 x 5)

Multiple Choice

Name the property shown by the statement: (3a + b) + 2c = 2c + (3a + b)

• Commutative Property

• Associative Property

Multiple Choice

Name the property shown by the statement (4 + 5) + 15 = 4 + (5 + 15)

• Commutative Property

• Associative Property

Tonight's Optional Homework

Practice Test: Page 51 (skip question #1)

*A bit more challenging Practice Test: pages 52-53