Unit 1 Lesson 1Interpreting Word Problems

EQ: How do we interpret expressions from word problems?

Standards: : CC.9-12.A.SSE.1, CC.9-12.N.Q.1

Graphic Organizer

• Follow along for folding instructions.ADD

SUBTRACT

MULTIPLY

DIVIDE

Addition

• Definition: – To put together; combine.

• Key Words: – plus, sum, more, increased by

Subtraction

• Definition: – To find how much more or

less.

• Key Words: – Minus, difference, less than,

decreased by.

Multiplication

• Definition: – Put together equal groups

• Key Words: – Times, of, product, equal

groups of

Divide

• Definition: – Separate into equal groups

• Key Words: – Quotient, split, divided by

Give 2 ways to write each algebraic expression in words.

• K+2.5______________________________

______________________________

• -5n______________________________

______________________________

• 100 - x______________________________

______________________________

Corey’s motorcycle gets 35 miles per gallon of gasoline. Write an expression for how many

miles the motorcycle can travel with g gallons of gasoline.

Paulette buys a bag of candy for a party. The bag contains 150 pieces of candy. Write an

expression for the number of pieces each person gets if there are p people at the party.

Evaluate each expression for:x = 28, y = 14, and z = 4

1. x – y = __________ = ______

2. yz = __________ = ______

3. = __________ = ______

At the video arcade, Jorge buys 25 tokens. He uses 2 tokens for each game that he plays.

1. Write an expression for the number of tokens Jorge has left after playing g games. __________________________________________

2. Find the number of tokens he has left after playing 1, 4, 10, and 12 games. __________________________________________

Write an algebraic expression for each verbal expression.

1. 8 less than n = _______________

2. The product of x and 4 = ______________

3. r split into 3 equal groups = ______________