4.5.2 Self-Check on Order of Operations

Exercise symbolExercise 7: PEMDAS

Find the correct value for each expression by following the correct order of operations.

(a) 20 minus two times open five minus two close squared plus 12

Solution symbol

Answer

multiline equation line 1 20 en dash two times open five en dash two close squared plus 12 line 2 equals 20 en dash two times left parenthesis cubed right parenthesis prefix plus of 12 line 3 equals 20 en dash two times open nine close plus 12 line 4 equals 20 en dash 18 plus 12 line 5 equation left hand side equals right hand side two plus 12 line 6 equals 14

(b) 27 minus 12 division three multiplication two squared

Solution symbol

Answer

(b) multiline equation line 1 27 minus 12 division three multiplication two squared line 2 equation left hand side equals right hand side 27 minus 12 division three multiplication four line 3 equation left hand side equals right hand side 27 minus four multiplication four line 4 equation left hand side equals right hand side 27 minus 16 line 5 equals 11

4.5.1 Self-Check on Exponents

4.6 Quiz Time