1. Using Variables
ALGEBRA 1 LESSON 1-1
Write the operation (+, –, , ÷) that corresponds to each phrase.
1. divided by 2. difference 3. more than 4. product
5. minus 6. sum 7. multiplied by 8. quotient
Find each amount.
more than less than 13
divided by twice 25
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2. Using Variables Solutions 1. divided by: ÷ 2. difference: –
ALGEBRA 1 LESSON 1-1
Solutions
1. divided by: ÷ 2. difference: –
3. more than: + 4. product: 
5. minus: – 6. sum: +
7. multiplied by:  8. quotient: ÷
9. 12 more than 9: = less than 13: 13 – 8 = 5
divided by 4: 16 ÷ 4 = twice 25: 2(25) = 50
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3. Using Variables
ALGEBRA 1 LESSON 1-1
Write an algebraic expression for “the sum of n and 8.”
“Sum” indicates addition. Add the first number, n, and the second number, 8.
n + 8
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4. Using Variables
ALGEBRA 1 LESSON 1-1
Define a variable and write an algebraic expression for “ten more than twice a number.”
Relate: ten more than twice a number
Define: Let y = the number.
Write: 2 • y + 10
2y + 10
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5. Using Variables Write an algebraic expression for each phrase.
ALGEBRA 1 LESSON 1-1
Write an algebraic expression for each phrase.
1. 7 less than 9
2. the product of 8 and p
3. 4 more than twice c .
. .
9 – 7 8p
2c + 4
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