
Ch 2: 1.1 Algebraic Expression
Presentation
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Mathematics
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9th - 12th Grade
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Practice Problem
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Easy
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Used 4+ times
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8 Slides • 23 Questions
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2
An expression is a phrase made up of numbers, operation symbols, and sometimes variables.
A variable is a letter that represents an unknown number. When you multiply a number by a variable, you do not need a multiplication sign between the two. You can write the number directly in front of the variable.
This number multiplied by the variable is called the coefficient.
3
Multiple Choice
Algebraic expressions can have a variable, operational symbols, and numbers?
True
False
4
​
5
Addition: sum, more, more than, plus, increased by, gain
Subtraction: difference, less, less than, minus, decreased by, loss
Multiplication: product, multiplied by, times, double, triple
Division: quotient, divided by, per, ratio, half, third, fourth, into, equal groups
Exponents: times itself, squared, cubed
6
Multiple Select
Finding these words in an expression means to subtract: sum, more, more than, plus, increased by, gain
True
False
7
Multiple Select
Finding these words in an expression mean to subtract: difference, less, less than, minus, decreased by, loss
true
false
8
Write five plus three times itself as an expression.
Step 1. What are the key words?
Step 2. What are the terms/numbers?
Step 3. Write out the expression.
So we get 5 + 32
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Step 1. What are the key words?
Step 2. What are the numbers/variables?
Step 3. Write out the expression.
5+4
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What are the key words?
Step 1. What are the key words?
Step 2. What are the numbers/variables?
Step 3. Write out the expression
n - 10
11
Multiple Choice
Which phrase represents "the sum of 11 and a number".
11-x
11+x
-11+1
-11-x
12
Multiple Choice
Choose the right expression for "the difference of three and a number".
3x
3-x
x-3
x3
13
Multiple Choice
14
Multiple Choice
Fourteen subtracted from a number written as an expression is
14-x
x-14
x/14
14+x
15
16
Multiple Choice
twenty times a number
20 + x
x - 20
20x
x/20
17
Multiple Choice
the quotient of seven and a number
7/x
x/7
x - 7
7 - x
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Multiple Choice
ten divided by a number
x + 10
10 - x
10/x
x/10
19
Multiple Choice
the quotient of a number and twelve
x + 12
x - 12
12/x
x/12
20
Multiple Choice
Jamal helped his grandmother plant her vegetable garden. He planted 3 rows of zucchini seeds and 4 rows of yellow squash seeds. Each row had s seeds. Which expression represents how many seeds Jamal planted in all?
3s + 4s
3s + 4
4s + 3
34s
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Multiple Choice
If m represents the amount of money Zoe had, which expression represents how he spent $28?
m − 28
m + 28
28m
28m
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Multiple Choice
If g represents Edna’s grade, which expression shows that she earned 5 points extra credit?
g + 5
g − 5
5g
5g
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Multiple Choice
If p represents the points Kia scored in a game, which expression shows how she tripled her point total?
3p
3 − p
3 + p
3p
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Multiple Choice
If c represents the cookies the Joe bought, which expression shows how much he split between himself and 3 siblings?
4c
4c
c + 4
c − 4
25
Multiple Choice
Polly, Jack, and Cara went to a craft store to buy special beads to make friendship bracelets. Each friend plans to put s star-shaped beads on their bracelet. Which expression represents how many star-shaped beads the friends should buy?
3s
s + 3
s − 3
3s
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Multiple Choice
For a big dinner, Hayley needs to extend her dining room table. Without the extra piece, the table is 6 feet long by 3 feet wide. Extending it increases the length e feet. Which expression represents the area of the table with the extension?
3(6 + e)
36e
3 + 6e
6e + 3
27
Multiple Choice
Tiana went to Game Stop to purchase a gaming system. They had a special promotion where for a limited time systems were half the price. She also had a coupon for $25 dollars off the sale price. If g represents the game system, which expression represents the sale price along with the coupon?
2g − 25
2g+25
2g − 25
25g−2
28
Multiple Choice
Luke's parents hired a clown for his birthday party. The clown charges $100 plus an additional $20 per hour. If h represents the hours, which expression represents how much Luke's parents spent on the clown?
100 + 20h
100h + 20
100 +20h
100 + h
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Fill in the Blanks
Kam earned 22 extra credit points. Keith earned e fewer extra credit points than Kam. Type an expression that shows how many extra credit points Keith earned.
Type answer...
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Fill in the Blanks
Kimi has b buttons. Scott has 72 more buttons than Kimi. Type an expression that shows how many buttons Scott has.
Type answer...
31
Multiple Choice
The debate team bought 18 matching T-shirts to split among its members. Each member of the team will get t T-shirts. Choose the expression that shows how many people are on the debate team.
t18
18t
18 + t
18 − t
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