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Ch. 1 Common ‘Squares’ 12 = 1 22 = 4 32 = 9 42 = 16 52 = 25 62 = 36 72 = 49 82 = 64 92 = 81 102 = 100 Ch. 1 Math Symbols and Words + Add Subtract Combine Plus Sum Take Away Minus Difference or ( ) Multiply / Divide Times Product Groups of Quotient = Equals Find the value Is Solve Evaluate Ch. 1 Order of Operations P E M D A S Please Excuse My Dear Aunt Sally Parentheses, Exponents, Multiplication or Division, Addition or Subtraction (whichever comes first) Steps: If the problem has parentheses, you must do that first. If there is multiple things inside the parentheses do those in order according to PEMDAS. After doing a part of the problem, cross that out and always write what you have left underneath (in steps) Then check for exponents Then check for multiplication or division…whichever comes first, do that. Do the same for addition and subtraction. Circle your answer. Ex. 4 + 9 – (2 +6) + 3 4+9–8+3 13 – 8 + 3 5+3=8 Ex. 24 + (81-50) + 52 24 + 31 + 52 16 + 31 + 52 47 + 52 = 99 Ex. (20 – 15)2 2 + 4 (5) 2 2 + 4 25 2 + 4 50 + 4 = 54