Math Vocabulary Like Terms Evaluate Area & Perimeter.

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Presentation transcript:

Math Vocabulary Like Terms Evaluate Area & Perimeter

Coefficient: The number in front of the variable. Math Vocabulary Coefficient: The number in front of the variable. 5 Coefficients Example: 6x -5y x 1 Terms: The numbers and variables separated by addition & subtraction. Example: 5x + 3y – 9 3 Terms Constant: The numerical terms. Example: -4x + 3 – 11 2 Constants

Combine Like Terms You can only combine terms that are alike, or terms that have the same variable. x2 x x2 x x 6 When I combine like terms I have 2x2+ 3x +6

Combine Like Terms 1) 8(x + 4) +2x 2) 7x + 5(x + 2) 8x + 32 + 2x Simplify each expression by using the Distributive Property and combining like terms. 1) 8(x + 4) +2x 2) 7x + 5(x + 2) 8x + 32 + 2x 7x + 5x + 10 12x + 10 10x + 32

Combine Like Terms 3) a + 3(3 + a ) - 5 4) 8(b - 2) + 7b Simplify each expression by using the Distributive Property and combining like terms. 3) a + 3(3 + a ) - 5 4) 8(b - 2) + 7b a + 9 + 3a - 5 8b - 16 + 7b 4a + 4 15b - 16

Evaluate PEMDAS Evaluate the variable expression if a = 3 and b = 4 1) 2) PEMDAS

Evaluate the expression if x = 3 and y = 4. 1) 2)

What is the total shaded area? Area Review What is the total shaded area? 3 m 3 m 6 m 9 m 3 m 12 m

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copyright©amberpasillas2010 #9 If a = 2 and b = 3 Evaluate 1) 3) 2) 4) copyright©amberpasillas2010

Extra

Combine Like Terms #Extra 1) 7x - 4y + 2x - y 1 You can only combine terms that are alike, or terms that have the same variable. 9x - 5y 2) 3m + 10n - 4m + 1 -m + 10n + 1 3) 7x + 3y 7x + 3y 4) 6a - (5a) + 2a + (-3) 3a - 3 5) 4k - (2j) - 6k - j -2k - 3j