I can substitute specific values for variables. Example: Evaluate 5(n + 3) – 7n, when n=1/2 I can evaluate algebraic expressions including those that arise from real-world problems. Examples: · Use the formulas V = s3 and A = 6 s2 to find the volume · The perimeter of a parallelogram is found using the formula p=2l + 2w . What is the perimeter of a rectangular picture frame with dimensions of 8.5 inches by 11 inches? and surface area of a cube with sides of length s = 1/2. I can apply the order of operations to evaluate expressions. Example: P Parentheses first E Exponents (ie Powers and Square Roots, etc.) MD Multiplication and Division (left-to-right) AS Addition and Subtraction (left-to-right) I can apply properties of operations to write equivalent expressions. Examples: · The Commutative Property - Changing the order of the values you are adding or multiplying does not change the sum or product. 6 + 4 = 4 + 6 a • b = b • a · The Associative Property - Changing the grouping of the values you are adding or multiplying does not change the sum or product. (2 + 7) + 3 = 2 + (7 + 3) (ab)c = a(bc) · The Identity Property – The sum of any number and zero is the original number (additive identity). The product of any number and 1 is the original number (multiplicative identity) · The Distributive Property of Multiplication over Addition and Subtraction 9(4 + 5) = 9(4) + 9(5) a(b + c) = ab + ac 5(8-2) = 5(8) – 5(2) a(b – c) = ab – ac As the week progresses, we will use the following resources:
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April 2015
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