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Writing Algebraic Expressions. How do I convert words into math operations & symbols? WORDS Algebraic Expressions Similar to Spanish English ¡Me gusta.

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Presentation on theme: "Writing Algebraic Expressions. How do I convert words into math operations & symbols? WORDS Algebraic Expressions Similar to Spanish English ¡Me gusta."— Presentation transcript:

1 Writing Algebraic Expressions

2 How do I convert words into math operations & symbols? WORDS Algebraic Expressions Similar to Spanish English ¡Me gusta matemáticas! I like math!

3 Convert the following into an algebraic expression. Identify the operation(s) key word(s): less than, plus, sum, etc. Three plus A Answer: 3 + A 3 + A

4 Convert the following into an algebraic expression. six decreased by Y 6 - y Answer: 6 - y

5 Let’s Try Another One Convert the following into an algebraic expression. Six less than Y 6 - Y

6 Actually… 6-y is incorrect! The phrase states “six less than y” meaning six “taken away from” y, therefore the correct algebraic expression is……. Y - 6

7 The product of eight and t Rearrange: 8 x t 8t Answer Same as saying “eight times t” X 8 t or

8 5 ÷ x

9 Which of the following expressions represents three times a number decreased by twelve? 1. 3x x x x Answer Now

10 Which one of the following expressions represents 28 less than three times a number? x 2. 3x x 4. 3x + 28 Answer Now

11 Let’s Practice! PhraseExpression the sum of nine and eight nine decreased by x 9 – x five more than three times x 5 + 3x the product of x and 6 6x seven divided by two times x 11 less than three times x 3x - 11

12 In groups, using the variables, coefficients, and math operations given, write an algebraic expression for…. 1) m increased by 5. m + 5 2) 3 times x. 3x

13 3) twelve less than six times n. 6n ) twelve more than six times n n 5) the quotient of x and twelve.

14 Additional Practice! Write an algebraic expression for each of the following… 1. Subtract 4 from x. 2. The product of 2 and m 3. Eight more than a twice w. 4. Sixteen less than twice m. 5. Five less than a t. 6. The product of 100 and w 7. Nine less than the product of x and two.


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