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Published byRobert Combs Modified over 2 years ago

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Objectives: Understand that algebraic operations follow the same rules as arithmetic operations. Solve simple equations Transform information from words into algebraic expressions and equations. Vocabulary:

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W/S 6.1B X + 7 = 22 T + 6 = R = W = 41 P - 14 = 27 G - 23 = H = L = 17 Solve the equations. (X = 15) (T = 13) (R = 27) (W = 22) (P = 41) (G = 28) (H = 12) (L = 7)

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1. A number x is multiplied by 6, and you get 54. Find the missing numbers: 2. Add 7 to a number y, double the answer and you get Think of a number T, multiply it by itself and the answer is Think of a number z, square it, add 12 and then you get Think of a number P, and then subtract 7. The answer is 25. X = 9 Y = 3 T = 6 Z = 3 P = 32 W/S 6.2B

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Expression in words: Add seven to a number. Expression in symbols: N + 7 Equation in words: Add 7 to a number and youll get 15. Equation in symbols: N + 7 = 15 When we give an expression in symbols it is called an algebraic expression.

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Problems: Make each of the expressions below into algebraic expressions. 1. A number X is multiplied by 3 and then added to 20. (X x usually written 3x + 20) 2. Take 6 away from T. ( T – 6 ) 3. Think of a number Y, double it, then subtract 7. ( Y x 2 – 7 usually written 2Y – 7 ) 4. Think of a number Z, square it then add 5. ( Z² + 5 ) 5. I think of a number,G, add 2 and then multiply the answer by 3. ( G + 2 ) x 3 usually written 3 ( G + 2) W/S 6.3B

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Make each of the statements below into algebraic equations. 1. I think of a number, M, multiply it by 3, and add 7and the answer is 16. 3M + 7 = I think of a number, double it, take 7 away and the answer is 3. 2N – 7 = 3 3. I think of a number, add 3 and then multiply by 4. The answer is ( N + 3 ) = I think of a number, square it, take away 3 and the answer is 13. N² - 3 = 13 In each of the questions above can you solve the equation. M = 3 N = 5 N = 3 N = 4 W/S 6.4B

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Objectives: Understand that algebraic operations follow the same rules as arithmetic operations. Solve simple equations Transform information from words into algebraic expressions and equations. Vocabulary:

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