Mathematics Order of Operations
Contest Quiz… You have just won a new bicycle, but the contest requires you to answer a skill testing question…
Skill-testing question 3 + 3 x 2 ÷ 3 = ? How many found 4 as the answer? How many found another answer? What is it? Why?
Skill-testing question 3 + 3 x 2 ÷ 3 = In fact, the answer is 5!!! Huh??!!
Try another… How / why could 7 - 3 x 2 + 3 be equal to 4?
Order of Operations The “Order of Operations” is a set of mathematical rules… They are used to decide which operations in an number sentence or expression MUST be done first to simplify the expression…
Order of Operations What are these rules? How can we remember them? We can use the acronym “BEDMAS” to remember the order for each operation in an expression.
B rackets E xponents D ivision M ultiplication A ddition S ubtraction “BEDMAS” B rackets E xponents D ivision M ultiplication A ddition S ubtraction Together in order in which they occur Together in order in which they occur
BEDMAS Note: Multiplication and Division are applied together in the order in which they appear. Addition and Subtraction are applied together in the order in which they appear.
B E D M A S So... 3 x 3 + 6 ÷ 3 = 9 + 6 ÷ 3 = 9 + 2 = 11
B E D M A S Try this... 11 - 2 x 3 ÷ 5
Try these: 12 – 6 ÷ 3 (12 – 6) ÷ 3 2 x 3 + 12 ÷ 3 2 x 6 - 23 BEDMAS Try these: 12 – 6 ÷ 3 (12 – 6) ÷ 3 2 x 3 + 12 ÷ 3 2 x 6 - 23
BEDMAS 12 – 6 ÷ 3
BEDMAS (12 – 6) ÷ 3
BEDMAS 2 x 3 + 12 ÷ 3
BEDMAS 2 x 6 - 23
Order of Operations Online Worksheet BEDMAS When you’re ready for the challenge…try this… Order of Operations Online Worksheet