Writing Algebraic E xpressions

1. Writing Algebraic Expressions Pre-algebra – November 22, 2012

2. Writing Algebraic Expression

3. Writing Algebraic Expression

4. Additional Example 1: Translating Word Phrases into Math Expressions Write an algebraic expression for each word phrase. A. 9 less than a number w 9 less than a number w w– 9 w – 9 B. 3 increased by the difference of p and 5 3increased by the difference ofp and 5 3 + (p –5) 3+ (p – 5)

5. f 6 Check It Out! Example 2 Write an algebraic expression for each word phrase. A. 88 times the difference of h and 4 88 times the differenceofh and 4 88 • (h– 4) 88(h – 4) B. the quotient of a number f and 6 quotient off and 6 f 6

6. Additional Example 3: Translating Math Expressions into Word Phrases Write a word phrase for the algebraic expression 9 – 3c. 9 – 3c 9 – 3 •c 9 minus the product of 3 and c 9 minus the product of 3 and c

7. Translate the verbal phrase into a numerical expression and evaluate. 1) The difference of 8 and 1. 2) The product of 12 and 6. 3) The sum of 5 and 9. 4) The quotient of 12 and 3.

8. Write a verbal phrase that represents each algebraic expression below. 1) The difference of 10 and x. 2) The product of 6 and m. 3) The quotient of 12 and y. 4) The sum of k and 7.

9. Writing Algebraic Expressions • 1)9 less than a number w • W – 9 • 2) 3 increased by the difference of p and 5 • 3 + (p – 5) • 3) The sum of a number and 15. • a + 15 • 4) 34 less than a number n • n - 34

10. Writing Algebraic Expressions • 5) 88 times the difference of h and 4 is 48 • 88(h – 4)=48 • 6) the quotient of a number and 5 is 8 • a / 5 = 8 • 7) a number increased by -2 is -9 • X + (-2) = -9

11. x 11 Lesson Quiz Write an algebraic expression for each word phrase. 1. 5 less than a number k 2. a number x divided by 11 3. 4times the sum of n and 5 Write an algebraic expression to evaluate the word problem. 4. Karen buys n raffle tickets for $0.50 each. If she buys 13 of them, how much will they cost? k – 5 4(n + 5) 0.50n; $6.50