What is the correct order of operations.
Groupings, Exponents, Multiplication OR Division (Left to Right), Addition OR Subtraction (Left to Right)
7 + 3 x (8 ÷ 4)
13
Write an equation
the sum of 9 and 3 divided 3
( 9 + 3) ÷ 3
What is this called?
4 x (3 + 5)
A numerical expression
If I have addition and subtraction in my expression, I should move from ______ ___ _______.
left to right
4 + 5 + 7 - 3 x 2 = 26
Follow GEMS and do x first.
The correct answer is 10.
9 x 8
72
Why is it important to know Order of Operation as a mathematician?
So everyone can solve every problem the same (correct) way by following the order of operation.
What type of number has more than two factors?
Composite Numbers
5[2 +(7+3)] + 12= 29
5[2 +5 +(7+3)] + 12=29, is not the correct answer.
The correct answer is 72.
(15 - 5) x 10 + 3
103
The problem is 20 - 5 x 2 + 3. The student's answer is 33. What did the student do wrong?
The student went from left to right without using the correct order of operations.
(5 x 4) – 6 ÷ 2 + 9
26
2 x ( 9 x 9 + 2) - 8
158
(2 x 9) ÷2 = 12
(2 x 9)÷ 2 = 12, is not the correct answer.
The correct answer is 9.
9 x 9
81
What is the saying we use to remember the correct Order of Operations?
GEMS
[(96 ÷ 2) + 12] x 100
6,000
9 + 2 x 2 - 3 = 19.
9 + 2 x 2 - 3 = 19, is not the correct answer.
The correct answer is 10.
8 x 6
48