PEMDAS/Words
Give the correct order of operations.
Parentheses, Exponents, Multiplication OR Division, Addition OR Subtraction
9 - 3 x 2=12
Correct answer is 3. Do x then -, not - then x.
Which is equal to this expression?
9 × 8
A (5 × 8) + (4 × 8)
B (5 + 8) × (4 + 8)
C (5 × 8) × (4 × 8)
D (5 + 8) + (4 + 8)
C (5 x 8) x (4 x 8)
14 x 12
168
192 / 12
16
What operation should you do first in this problem?
{[5 - 2 + (19 x 2)]} + [12 x (3 / 9)]
19 x 2
5 2 + 1=11
5 2 = 25, not 10. Correct Answer is 26.
7 + (2 x 4) - 1
14
23 x 13
299
437 / 19
23
Which of the following statements is true?
A. (25 x 10) - 15 is 15 decreased by the product of 25 and 10.
B. 3 + (19 - 10) is 3 more than the sum of 19 and 10.
C. 7 - (18 + 38) is 7 less than the sum of 18 and 38.
D. (24 / 6) x 5 is 5 times the quotient of 24 and 6.
D
(24÷6)×5 is 5 times the quotient of 24 and 6.
56 ÷ (4+4) + 32
16
26 x 25
650
There are 624 cups of flour and Mrs. Cross wants to bake cupcakes for the school bake sale.
Each pan of cupcakes needs 16 cups of flour.
How many pans will Mrs. Cross be able to bake with the flour that she has?
624 / 16 = 39 pans
Tell what 5 3 really means.
It means 5 x 5 x 5
20 – (5+3) x 2 + 4
8
599 x 79
47, 321
A museum receives an average of 1,460 visitors per day. The museum is open every day. Estimate the number of visitors the museum receives during a month (round up).
Hint: How many days are in a month on average?
Answer:
1460/30 = 48 r 20 ~
49 visitors
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.
(5 x 4) – 6 ÷ 2 + 9
26
92 x 82 x 32 x 22
186, 624
What makes p true?
3,032 ÷ p = 8
3032 / 8 = 379