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Fix my Mistake
Solve
Solve
Exponents
100
Give the correct order of operations.
Parentheses, Exponents, Multiplication OR Division, Addition OR Subtraction
100
9 - 3 x 2=12
Correct answer is 3. Do x then -, not - then x.
100
3 + 4 x 5
23
100
14 - 2 x 7
0
100
10
1
= ?
10
200
Why is it important to know PEMDAS as a mathematician?
So everyone can solve every problem the same (correct) way.
200
5
2
+ 1=11
5
2
= 25, not 10. Correct Answer is 26.
200
7 + (2 x 4) - 1
14
200
49 ÷ (3+4) + 5
2
32
200
2
3 =
?
8
300
What is the saying we use to remember the correct Order of Operations?
Please Excuse My Dear Aunt Sally.
300
3
2
- 6 = 0
3
2
= 9, not 6. Correct answer is 3
300
56 ÷ (4+4) + 3
2
16
300
5 + 14 ÷ 2 × 5
40
300
3
2
= ?
9
400
Tell what 5
3
really means.
It means 5 x 5 x 5
400
4 + 5 + 7 - 3 x 2 = 26
You need to follow PEMDAS and do x first. Correct answer is 10.
400
20 – (5+3) x 2 + 4
8
400
(4-1)
2
+ (5+ 1)
2
45
400
4
3
= ?
64
500
The problem was 20 - 5 x 2 + 3. My answer was 33. What did I do wrong?
I went from left to right without using the correct order of operations.
500
10
3
= 30
10
3
= 10 x 10 x10, which is 1000, not 30.
500
(5 x 4) – 6 ÷ 2 + 9
26
500
1
2
+ 2
2
x 3
2
- 4
2
21
500
5
4
= ?
625