Order of Operations
Mario says that the expressions below will all have the same answer. Do you agree with Mario? Explain why or why not.
-27 / 3
27 / -3
-(27 / 3)
Yes, the answer for all of these will be -9.
3 3
____ + ____
8 8
____
4
What is the LCM of 3 and 4?
12
Who did Forbes name the youngest “self-made billionaire ever” in 2019?
A. Timothée Chalamet
B. Kylie Jenner
C. Justin Bieber
D. Kane Brown
B. Kylie Jenner
4 / 2 (-7 + -3)
-20
7 1
____ - ____
10 2
1
___
5
Use prime factorization to try and figure out the GCF of 30 and 66.
6 is the greatest common factor for 30 and 66.
What is the LCM of 8 and 12?
24
Which pop singer’s real name is Robyn Fenty?
A. Rihanna
B. Miley Cyrus
C. Zendaya
D. Rosie Hollins
A. Rihanna
Darnell simplified the expression. Describe and correct his mistake.
20 – 1/2 ∙ 62
20 – 32
20 – 9
11
According to the order of operations, he should have squared 6 before multiplying by 1/2 because exponents comes before multiplication.
20 – 1/2 ∙ 62
= 20 – 1/2 ∙ 36
= 20 – 18 = 2
5 1
____ + ____
6 4
13 1
___ = 1 ____
12 12
Jake gets paid every 3 days and Andrew gets paid every 6 days. If they started working on the same day, how many days later would they be paid on the same day?
A. 3 daysD. 16 days
What is the world record for the most number of hotdogs eaten in one sitting?
A. 58
B. 76
C. 49
D. 32
B. 76
Which statement is equivalent to the expression below. Select all that apply.
-19 - (-7)
A. -19 + 7
B. 10 - 7
C. 7 - 19
D. -7 - (-19)
A. -19 + 7
C. 7 - 19
Manny bought 22 ⅔ kg of tomatoes & 19 ⅗ kg of potatoes. Find the difference.
1
3 ___
15
Which of the following pairs has a greatest common factor that is a prime number? Select all that apply.
A. 9 and 21
B. 9 and 14
C. 9 and 35
D. 14 and 35
A. 9 and 21
D. 14 and 35
Explain how LCM can be used to add and subtract fractions.
Ex. 7/8 + 5/3
*Answers may vary*
LCM can be used to find a common denominator in order to add or subtract fractions.
Example, the LCM of 8 and 3 is 24, so both fractions should have a denominator of 24 before they are added.
21/24 + 40/24
Who is the most streamed artist on Spotify?
A. SZA
B. Drake
C. The Weeknd
D. Taylor Swift
C. The Weeknd
What is the value of 32 – 4[7 + 3(5 – 2)]?
A. -111
B. -58
C. -55
D. 80
C. -55
25 5
____ + ____
30 9
25 7
____ = 1 ____
18 18
Identify the following number as prime or composite. 33
33 is a composite number.
What is the LCM of 2, 11, 12?
132
Who has the most followers on Instagram?
A. Lionel Messi
B. Selena Gomez
C. Kylie Jenner
D. Cristiano Ronaldo
D. Cristiano Ronaldo