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Do Now 9/10/09

Do Now 9/10/09. Take out HW from last night. Text p. 12-13, #14-32 evens & 36 Copy HW in your planner. Text p. 19, #10-36 evens Quiz sections 1.1-1.4 Tuesday

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Do Now 9/10/09

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  1. Do Now 9/10/09 • Take out HW from last night. • Text p. 12-13, #14-32 evens & 36 • Copy HW in your planner. • Text p. 19, #10-36 evens • Quiz sections 1.1-1.4 Tuesday • In your journal answer the following question. Suppose “#” is a special operation that “a # b” means 4a – 2b. What is 3 # 2? What is 2 # 3? Is # a commutative operation?

  2. HomeworkText p.12-13, #14-32 evens & 36 14). 16). 18). 20). 22). 2 to the 5th power; 24). 12 cubed; 26). 4 to the 4th power; 28). 0.6 to the 4th power; 30). 49; 0.16 32). 2401; 0.0256 36). a. 3375 in³; b. 121.5 lb

  3. Evaluate the Expression 3 + 7 x 3 3 + 7 = 10 10 x 3 = 30 7 x 3 = 21 3 +21 = 24

  4. Objective • SWBAT use the order of operations to evaluate expressions.

  5. Section 1.3, Order of Operations Order of Operations – the rules established to evaluate an expression involving more than one operation 5 ÷ x · 6 13 * 22 - 14 4(y² – 8)

  6. Order of Operations PEMDAS 1 2 3 4

  7. Evaluate the Expression ² PEMDAS 2 + 7 x3 4 + 7 x3 4 + 21 25

  8. Evaluate the Expression ³ [2 x (4 + 4)] +3 ³ [2 x 8] +3 ³ 16 +3 16 + 27 PEMDAS 43

  9. Evaluate the expressions when m = 3. a. (1 +m²) (1 + 3²) Substitute. (1 + 9) Evaluate power. 10 Add within parentheses. b. m³ – 6 ÷ 6 3³– 6 ÷ 6 Substitute. 27– 6 ÷ 6 Evaluate power. 27–1 Divide. 26 Subtract.

  10. Evaluate the expression27 32 2 3. 27 32 2 – 3 = 27 92 – 3 ANSWER 32–3 =6–3 The value of the expression27 32 2 – 3 is 3. 279 2 – 3 =3 2 – 3 – STEP 1 There are no grouping symbols, so go to Step 2. STEP 2 Evaluatepowers. Evaluate power. STEP 3 Multiply and divide from left to right. Divide. STEP 4 Multiply. Add and subtract from left to right. 6 – 3 = 3 Subtract.

  11. 35 = b. 2[9] = 18 = Evaluate the expression. 7(5) a. 7(13 – 8) = Subtract within parentheses. Multiply. Rewrite fraction as division. Evaluate within parentheses. Divide. 2[30 –21] c. 2[30 – (8+ 13)] = Add within parentheses. Subtract within brackets. Multiply.

  12. 9 4 9x = 3(4+ 2) 3(x+ 2) 9 4 = 3 6 36 = 18 = 2 Evaluate the expression whenx=4. Substitute 4 for x. Add within parentheses. Multiply. Divide.

  13. 24 NJASK7 Prep Homework Text p. 19, #10-36 even

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