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1) -5+6 2) 7+ (-8) 3) -8 + -2 4) 8(-3) 5) -9(2) 6) 18/2 7 (-9)/3 1 Algebra II
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Order of Operations Algebra II
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The order of operations is a rule that tells you which operation you need to perform and the order in which it must be done to achieve the correct answer. The order of operations is often called PEMDAS and each of the letters represents one part of the rule. 3 Algebra II
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P: parenthesis and grouping symbols E: exponents M: multiplication D: division A: addition S: subtraction. 4 Algebra II
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MD are performed in the order they appear in the expression from left to right. AS are performed in the order they appear in the expression from left to right. 5 Algebra II
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2 + 3 × 4 ÷ 2 6 Algebra II
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3+9·2÷3+8 7 Algebra II
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7+4[4+(3×2)]−5 8 Algebra II
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4 [30−(4×2−3)] 9 Algebra II
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1. 4+5×2−3 2.6+6×3÷2−7 3. 5+5×8÷2+6 10 Algebra II
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4.13−3×2+8−2 5.17−5×3+8÷2 6.9+4×2+7−1 11 Algebra II
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7.8+5×6+2×4−3 8.19+2×4−32+10 9. 12+4×4÷8−3 10. 12×2+6÷2−12 12 Algebra II
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Variable- symbol used to represent an unknown number Algebraic Expression- An expression with one or more numbers and variables 13 Algebra II
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Ways you could see multiplication: xy x. y x(y) (x)(y) (x)y 14 Algebra II
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Power- x n X is the base N is the exponent 15 Algebra II
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To evaluate an expression means to find its value. 16 Algebra II
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Remember: PEMDAS 17 Algebra II
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5(7)-6/2+3 2 8[6 2 -3(2+5)]/8+3 18 Algebra II
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(x 3 +y 3 )/(x 2 -y 2 ), when x=4.2 and y=1.8 19 Algebra II
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3(3+7) 2 /5 27/3(5-3) 2 20 Algebra II
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2[8(a-b) 2 +3b] if a=6 and b=3 21 Algebra II
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4y+6-2, when y=6 22 Algebra II
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9+3x-5+2, when x=8 23 Algebra II
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6y+2y-5, when y=3 24 Algebra II
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8+3y-5, when y=4 25 Algebra II
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7x-2(3)/3+12, when x=5 26 Algebra II
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2x 3 -12, when x=4 27 Algebra II
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n 5 +3m 2 -15, when m=3 and n=2 28 Algebra II
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6a+4 2 -2, when a=3 29 Algebra II
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a 3 +14, when a=6 30 Algebra II
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2a 2 -16, when a=4 31 Algebra II
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5b 3 +12, when b=-2 32 Algebra II
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2x 2 +52, when x=4 33 Algebra II
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1. −23 + 7y + 1 for y = 6. 2. −12 + 7x 2 − 8 for x = 6. 3. 14 + 7y 2 + 22 for y = 3. 34 Algebra II
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1. 18x+7y+12 for x = 3,y = 6. 1. −63 +7x 2 −18 for x = 5. 1. 45+8y+33 for y = 5. 35 Algebra II
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1. −33 +8x−22 for x = 7. 1. (−12) 2 +7y−42 for y = 6. 1. −43 +9x+11 for x = 4. 36 Algebra II
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1. (−7) 2 +7x 2 +122 for y = 2. 2. −45+72 −x 3 for x = 4. 37 Algebra II
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For each problem, x=2, y=3, a=4/5, and b=3/5 1) x+7 2) 3x-5 3) 6a+8b 4) a 2 +2b 5) (5a 2 b)/y 38 Algebra II
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For each problem, x=2, y=3, a=4/5, and b=3/5 6) (10x) 2 + 100a 7) 23 – (a+b) 8) (x 4 -y 2 )/(3ay) 39 Algebra II
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p. 22 13-29 odd 40 Algebra II
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Complete the Order of Operations Packet from Friday with your group! 41 Algebra II
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5a+2b-17, when a=3 and b=4 6xy+2x-7 when x=4 and y=5 42 Algebra II
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9x+18y+5, when x=-6 and y=2 43 Algebra II
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6a+7 when a=8 44 Algebra II
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9x+2y, when x=2 and y=-3 45 Algebra II
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5a+b 2 when a=12 and b=4 46 Algebra II
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(8/x)+2 when x=4 47 Algebra II
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6x+2.5 when x=2 48 Algebra II
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y 2 +4, when x=-9 49 Algebra II
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7x+2y, when x=3 and y=5 50 Algebra II
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9xy+x 2, when x=4 and y=2 51 Algebra II
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3ab+b 3, when a=9 and b=2 52 Algebra II
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16xy 2 +14, when x=3 and y=4 53 Algebra II
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6xy+4x when x=2 and y=7 54 Algebra II
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16y+8xy, when x=3 and y=4 55 Algebra II
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3x 2 +24y, when x=3 and y=4 56 Algebra II
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