1. A#12 / Ch. 1 Are You Ready? Homework WS
Homework Corrections
A#12 / Ch. 1 Are You Ready? Homework WS
1. a) 9.08
b) 0.14 c)
d) 2.18
2. a) 0.42
b) 0.25
c) 2.25 d)
3. a) 2.05
b) 30.9
4. a)
b) 4 c)
d) 6
5. a) b)

2. Warm Up 18 ÷ 3 + 2  4 2. -10(3 + 4) 4 + (-2) 4. 6 – (-1)
18 ÷  (3 + 4)
4 + (-2) – (-1)
-8 –

3. Lesson Objectives: I will be able to …
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Lesson Objectives: I will be able to …
Translate between words and algebra
Evaluate algebraic expressions
Language Objectives: I will be able to …
Read, write, and listen about vocabulary, key
concepts, and examples
Listen to words and write related algebraic
expressions

4. A constant is a value that does not change.
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A variable is a letter or a symbol used to represent a value that can change.
A constant is a value that does not change.
A numerical expression contains only constants and operations.
An algebraic expression may contain variables, constants, and operations.

5.   + – Plus, sum, increased by Times, product, equal groups of
You will need to translate between algebraic expressions and words to be successful in math.
Page 1 + –  
Plus, sum,
increased by
Minus, difference, less than, decreased by
Times, product, equal groups of
Divided by, quotient

6. These expressions all mean “2 times y”:
2y (y)
2•y (2)(y)
2 x y (2)y
Writing Math

7. Example 1: Translating from Algebra to Words
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Example 1: Translating from Algebra to Words
Give two ways to write each algebra expression in words.
A r
C. 7m
the sum of 9 and r
the product of m and 7
9 increased by r
m times 7
B. q – 3
D. j  6
the difference of q and 3
the quotient of j and 6
j divided by 6
3 less than q

8. Give two ways to write each algebra expression in words.
Your Turn 1
Page 2
Give two ways to write each algebra expression in words.
A n B.
4 decreased by n
the quotient of t and 5
n less than 4
t divided by 5

9. Multiply Divide Add Subtract Put together, combine
To translate words into algebraic expressions, look for words that indicate the action that is taking place.
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Add
Subtract
Multiply
Divide
Put together, combine
Find how much more or less
Put together equal groups
Separate into equal groups

10. Example 2: Translating from Words to Algebra
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A. John types 62 words per minute. Write an
expression for the number of words he types in m
minutes.
m represents the number of minutes that John types.
62 · m or 62m
Think: m groups of 62 words
B. Roberto is 4 years older than Emily, who is y years old.
Write an expression for Roberto’s age.
y represents Emily’s age.
y + 4
Think: “older than” means “greater than.”

11. t represents the number of hours that Lou drives.
Your Turn 2
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Lou drives at 65 mi/h. Write an expression for the number of miles that Lou drives in t hours.
t represents the number of hours that Lou drives.
65t
Think: number of hours times rate per hour.

12. Example 3: Evaluating Algebraic Expression
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Evaluate each expression for a = 4, b =7, and
c = 2.
A. b – c
b – c = 7 – 2
Substitute 7 for b and 2 for c.
= 5
Simplify.
B. ac
ac = 4 ·2
Substitute 4 for a and 2 for c.
= 8
Simplify.

13. Evaluate each expression for m = 3 and p = 9.
Your Turn 3
Page 2
Evaluate each expression for m = 3 and p = 9.
p ÷ m
p ÷ m = 9 ÷ 3
Substitute 9 for p and 3 for m.
= 3
Simplify.

14. Cornell Notes Fill in the Essential Question:
“How can I translate between words and
algebra and evaluate algebraic expressions?”
Write two or three main ideas from this lesson
in the Notes section.
Write a Question for each main idea.
(The answer to the question should be the
main idea.)
Summarize the answers to your questions in
the Summary section.
Page 4

15. Matching Game
I will call names and each student gets the opportunity to pick two blue cards and see if they are a match.

16. Homework
Assignment #13
1-1 Homework Worksheet