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Fix my Mistake
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100
Why is it important to know PEMDAS as a mathematician?
So everyone can solve every problem the same (correct) way.
100
5
2
+ 1=11
5
2
= 25, not 10. Correct Answer is 26.
100
7 + (2 x 4) - 1
14
100
49 ÷ (3+4) + 5
2
32
200
What is the saying we use to remember the correct Order of Operations?
Please Excuse My Dear Aunt Sally.
200
3
2
- 6 = 0
3
2
= 9, not 6. Correct answer is 3
200
56 ÷ (4+4) + 3
2
16
200
5 + 14 ÷ 2 × 5
40
300
Tell what 5
3
really means.
It means 5 x 5 x 5
300
4 + 5 + 7 - 3 x 2 = 26
You need to follow PEMDAS and do x first. Correct answer is 10.
300
20 – (5+3) x 2 + 4
8
300
(4-1)
2
+ (5+ 1)
2
45
400
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.
400
10
3
= 30
10
3
= 10 x 10 x10, which is 1000, not 30.
400
(5 x 4) – 6 ÷ 2 + 9
26
400
1
2
+ 2
2
x 3
2
- 4
2
21