Explanations
Give the the correct Order of Operations
Parentheses/Brackets, Exponents, Multiplication OR Division, Addition OR Subtraction
9 - 3 x 2=12
Correct answer is 3. Do x then -, not - then x.
3 + 4 x 5
23
14 - 2 x 7+√16
4
Alyssa buys 3 bags of chips for $2 each and a drink for $4. She also has a $5 coupon. What is her total cost?
(3 × 2) + 4 – 5 = $ 5
Why is it Important to know BEDMAS as a mathematician?
So everyone can solve every problem the same (correct) way.
52 + 1=11
52 = 25, not 10. Correct Answer is 26.
7 + (2 x 4) - 1
14
49 ÷ (3+4) + 52
32
For a birthday party, Jonah buys 4 packs of balloons, each pack has 5 balloons. He pops 6 balloons while decorating. How many balloons does he have left?
(4 × 5) – 6 = 14 balloons
5 multiplied by 4
32 - 6 = 0
3 2 = 9, not 6. Correct answer is 3
56 ÷ (4+4) + 32
16
5 + 14 ÷ 2 × 5- √25
35
A family orders 2 appetizers for $8 each, 3 meals for $12 each, and pays a tax of $6. What is the total bill?
(2 × 8) + (3 × 12) + 6 = $58
Tell what 53 really means.
It means 5 x 5 x 5, which equals 125
4 + 5 + 7 - 3 x 2 = 26
You need to follow PEMDAS and do x first. Correct answer is 10
20 – (5+3) x 2 + 42
20
(4-1)2 + (5+ 1)2
45
Tickets cost $15, and t-shirts cost $10 each. If 8 students each buy a ticket and half of them also buy a t-shirt, how much money is raised?
(8 × 15) + (4 × 10) = $ 160
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.
103 = 30
10 3 = 10 x 10 x10, which is 1000, not 30.
(5 x 4) – 8 ÷ 22 + 9
27
12 + 22 x 32 - 42
21
You score 10 points per puzzle, but lose 8 points for each incorrect puzzle. If you solve 7 puzzles and make 2 mistakes, then double your score in the bonus round, what’s your final score?
((7 × 10) – (2 × 8)) × 2 = 108