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Fix my Mistake
Solve
Solve
1000 Points!!
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

Divya has 70 rocks. She donates half of the rocks to a science center. Then she collects 3 rocks on each of her nature hikes. Write an expression to represent the number of rocks Divya has after she hikes on n nature hikes.

½(70) + 3n

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) + 52
32
200

Jake has a bunch of C balloons. He adds 15 balloons the bunch. Then he shares all the balloons equally amongst his 4 grandchildren. Write an expression that represents the number of balloons that each grandchild receives. 

(C + 15) ÷ 4

300
What is the saying we use to remember the correct Order of Operations?
Please Excuse My Dear Aunt Sally.
300
32 - 6 = 0
3 2 = 9, not 6. Correct answer is 3
300
56 ÷ (4+4) + 32
16
300
5 + 14 ÷ 2 × 5
40
300

Evaluate the expression 6d + 15e ÷ f - 3 for d = 8, e = 3, and f = 10. Show your work


100

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

Solve the following the expression: 

7 + 9(x - 4)


9x - 29

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
12 + 22 x 32 - 42
21
500

Michael has a crate of b bananas. He adds 24 bananas to the crate. Then he shares all bananas equally among 4 coworkers. Write an expression that represents the number of bananas each coworker receives.


(B + 20) ÷ 4