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1-11 6 th grade math. Writing Expressions. Objective. To translate word phrases into algebraic expressions.
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1-116th grade math Writing Expressions
Objective • To translate word phrases into algebraic expressions. • Why? To master another aspect of Algebra and Functions in 6th grade math (and beyond). Being able to write expressions is a key component in Algebra and other higher math when solving any kind of word problem.
California State Standards AF 1.2: Evaluate an algebraic expression for a given situation, using up to three variables. AF 1.3: Apply algebraic order of operations and the commutative, associative, … properties to evaluate expressions… MR 3.0: Move beyond a particular problem by generalizing to other situations.
Vocabulary Chart of terms for the 4 operations. * Order matters in is VERY important! Remember about parentheses: 6 times the sum of y and 1 = 6 x (y + 1) or 6(y + 1)
How to Write Expressions 1) Read the statement and understand what you are being asked to do. 2) Look for the key words to translate into operations (+, -, x, ÷). 3) Look for “is” to translate to =. 4) Parentheses are used to arrange in a certain order. 4) Write out your expression or equation and check your work. • A sum of a number and 3. = x + 3 B) 37 increased by 5 = 37 + 5 C) 10 times a number = 10 x n or 10n or 10‧n D) 2 less than a number = n – 2 E) A quantity more than 10 = 10 + x
Try It! Write each phrase as an expression • 6 less than k 2) t divided by 8 • m and 3 more 4) Alex raked 5 bags. Adam raked an x amount. How many bags were raked in all? • k – 6 2) t ÷ 8 3) m + 3 4) r + 5
Objective Review • You can now translate word phrases into algebraic expressions. • Why? You have now mastered another aspect of Algebra and Functions in 6th grade math (and beyond). Being able to write expressions is a key component in Algebra and other higher math when solving any kind of word problem. You can translate word phrases into mathematical expressions using numbers, symbols, and letters.
Independent Practice • Complete problems 5-14. • Copy original problem first. • Show all work! • If time, complete Mixed Review: 15-21. • If still more time, work on Accelerated Math.