Fix My Mistake
9 - 3 x 2 = 12
9 -3 x 2 = 3
Give the correct order of operations.
Parenthesis, Exponents (still correct if step not included), Multiplication/Division, Addition/Subtraction
3 + 6 x 4
27
(14 + 6) x (12 -4) -9
151
the sum of 9 and 3 divided 3
( 9 + 3) ÷ 3
10÷5 x 2 = 1
10÷5 x 2 = 4
What is the saying we use to remember the correct Order of Operations?
Please Excuse My Dear Aunt Sally
25 ÷ 5 -2
3
(15 - 5) x 10 + 3
103
Which comes first: exponents (the tiny numbers) or parentheses?
Parentheses or brackets!
5 x 5 +1 = 30
5 x 5 + 1= 26
What is this called?
4 x (3 + 5)
numerical expression
12 - 8 ÷ 2 + 3
11
6 x 8 + ( 7 - 6 )
49
8 x 6
48
4 + 5 + 7 - 3 x 2 = 26
4 + 5 + 7 - 3 x 2 = 10
left to right
20 ÷ (8-3) + 16
20
( 10 + 19 -5 ) x 2
48
9 x 8
72
The problem was 20 - 5 x 2 + 3. My answer was 33. What did I do wrong?
I did not multiply first. The answer should be 13.
What direction do you do multiplication/division or addition/subtraction? (Hint: it's the same direction we read a sentence.)
Left to right
7 + 3 x (8 ÷ 4)
13
2 x ( 9 x 9 + 2) - 8
158
9 x 9
81