Upload
zeke
View
35
Download
0
Embed Size (px)
DESCRIPTION
Thursday, September 8 th. Please write down homework and Complete warm-up. Warm UP. Evaluate when h=12 1. 7h 2. h-5. Joke of the Day. Why did the computer get glasses ? To improve its web sight. Reteach/Retest. Reteach Monday, September 12 th. Retest Tuesday, - PowerPoint PPT Presentation
Citation preview
Thursday, September 8th • Please write down homework and
Complete warm-up
Evaluate when h=12
1. 7h 2. h-5
WARM UP
Joke of the Day
Why did the computer get glasses?
To improve its web sight
Reteach/Retest
Reteach
Monday, September 12th
Retest
Tuesday,September 13th
Algebra
Candy Toss ReviewRaise your hand when you have found the answer!
Don’t blurt out or you will be disqualified
Evaluate when t=8
t + 9
Evaluate when v=3
10-v
Is this an arithmetic sequence and why?
211,209,207,205……
Write in standard
4
Write in exponential
3 x 5 x 3 x 3 x 5 x 5 x 5
Homework Answersp.2
Let’s try some together!!!!
Table of Contents Date: 9/8
Section: 2-2
Title: Translating words to algebra
Pages: 3-4
On your whiteboards….. divide your boards in four parts in upper left: think of addition
words in upper right: think of subtraction
wordsIn lower left: think of multiplication
wordsIn lower right: think of division
words
37 + 28
• 28 added to 37• 37 plus 28• the sum of 37 and 28• 28 more than 37
• 28 added to x• x plus 28• the sum of x and 28•28 more than x
x + 28
+Operation
Numerical Expression
Words
Algebraic Expression
Words
Adding
• 12 subtracted from k• 12 minus k• the difference of k and 12• take away 12 from k
k — 12
Operation
Numerical Expression
Words
Algebraic Expression
Words
90 — 12
• 12 subtracted from 90• 90 minus 12• the difference of 90 and 12• 12 less than 90• take away 12 from 90
subtracting
• 8 times w• w multiplied by 8• the product of 8 and w• 8 groups of of w
8 w or (8)(w) or 8w
Operation
Numerical Expression
Words
Algebraic Expression
Words
8 48 or 8 48
• 8 times 48• 48 multiplied by 8• the product of 8 and 48
or (8)(48) or
8(48) or (8)48
Multiplying
• n divided by 3• the quotient of n and 3
n 3 or
Operation
Numerical Expression
Words
Algebraic Expression
Words
327 3 or
• 327 divided by 3• the quotient of 327 and 3
327
3
n
3
Dividing
Write each phrase as a numerical or algebraic expression.
A. 987 minus 12987 12
B. x times 4545 • x or 45x
You Try!
c. 42 less than 7979 42
d. y divided by 22y 22 or y
22
WARNING
“Less than”Is a tricky monster
Whenever you see “less than” the first number will go second in your
expressionExample: 4 less than 9
9-4
Write two phrases for
each expression.
• 16 divided by b
B. (75)(32)• 75 times 32
• the quotient of 16 and b
• the product of 75 and 32
a. 16
b
Action Operation
Put together or combine
Find how much more or less
Put together groups of equal parts
Separate into equal groups
Add
Subtract
Multiply
Divide
Word Problems
Lake Superior is the largest lake in North America. Let a stand for the area in square miles of Lake Superior. Lake Erie has an area of 9,910 square miles. Write an expression to show how much larger Lake Superior is than Lake Erie.
To find how much larger, subtract the area of Lake Erie from the area of Lake Superior.
a – 9,910
Lake Superior is a – 9,910 square miles larger than Lake Erie.
Let p represent the number of colored pencils in a box. If there are 26 boxes
on the shelf, write an algebraic expression to represent the total number of pencils on the shelf.To put together 26 equal groups of p,
multiply 26 times p.
26p, or 26 • p
There are 26p pencils on the shelf.