1) -5+6 2) 7+ (-8) 3) 4) 8(-3) 5) -9(2) 6) 18/2 7 (-9)/3 1 Algebra II
Order of Operations Algebra II
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
P: parenthesis and grouping symbols E: exponents M: multiplication D: division A: addition S: subtraction. 4 Algebra II
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
× 4 ÷ 2 6 Algebra II
3+9·2÷3+8 7 Algebra II
7+4[4+(3×2)]−5 8 Algebra II
4 [30−(4×2−3)] 9 Algebra II
×2−3 2.6+6×3÷2−7 ×8÷ Algebra II
4.13−3×2+8−2 5.17−5×3+8÷2 6.9+4×2+7−1 11 Algebra II
7.8+5×6+2×4−3 ×4−32+10 ×4÷8−3 ×2+6÷2−12 12 Algebra II
Variable- symbol used to represent an unknown number Algebraic Expression- An expression with one or more numbers and variables 13 Algebra II
Ways you could see multiplication: xy x. y x(y) (x)(y) (x)y 14 Algebra II
Power- x n X is the base N is the exponent 15 Algebra II
To evaluate an expression means to find its value. 16 Algebra II
Remember: PEMDAS 17 Algebra II
5(7)-6/2+3 2 8[6 2 -3(2+5)]/ Algebra II
(x 3 +y 3 )/(x 2 -y 2 ), when x=4.2 and y= Algebra II
3(3+7) 2 /5 27/3(5-3) 2 20 Algebra II
2[8(a-b) 2 +3b] if a=6 and b=3 21 Algebra II
4y+6-2, when y=6 22 Algebra II
9+3x-5+2, when x=8 23 Algebra II
6y+2y-5, when y=3 24 Algebra II
8+3y-5, when y=4 25 Algebra II
7x-2(3)/3+12, when x=5 26 Algebra II
2x 3 -12, when x=4 27 Algebra II
n 5 +3m 2 -15, when m=3 and n=2 28 Algebra II
6a , when a=3 29 Algebra II
a 3 +14, when a=6 30 Algebra II
2a 2 -16, when a=4 31 Algebra II
5b 3 +12, when b=-2 32 Algebra II
2x 2 +52, when x=4 33 Algebra II
1. −23 + 7y + 1 for y = −12 + 7x 2 − 8 for x = y for y = Algebra II
1. 18x+7y+12 for x = 3,y = −63 +7x 2 −18 for x = y+33 for y = Algebra II
1. −33 +8x−22 for x = (−12) 2 +7y−42 for y = −43 +9x+11 for x = Algebra II
1. (−7) 2 +7x for y = −45+72 −x 3 for x = Algebra II
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
For each problem, x=2, y=3, a=4/5, and b=3/5 6) (10x) a 7) 23 – (a+b) 8) (x 4 -y 2 )/(3ay) 39 Algebra II
p odd 40 Algebra II
Complete the Order of Operations Packet from Friday with your group! 41 Algebra II
5a+2b-17, when a=3 and b=4 6xy+2x-7 when x=4 and y=5 42 Algebra II
9x+18y+5, when x=-6 and y=2 43 Algebra II
6a+7 when a=8 44 Algebra II
9x+2y, when x=2 and y=-3 45 Algebra II
5a+b 2 when a=12 and b=4 46 Algebra II
(8/x)+2 when x=4 47 Algebra II
6x+2.5 when x=2 48 Algebra II
y 2 +4, when x=-9 49 Algebra II
7x+2y, when x=3 and y=5 50 Algebra II
9xy+x 2, when x=4 and y=2 51 Algebra II
3ab+b 3, when a=9 and b=2 52 Algebra II
16xy 2 +14, when x=3 and y=4 53 Algebra II
6xy+4x when x=2 and y=7 54 Algebra II
16y+8xy, when x=3 and y=4 55 Algebra II
3x 2 +24y, when x=3 and y=4 56 Algebra II