Subjects
Careers
Biology
Geometry
English
AP English Literature
Fun Stuff
Parallel & Perpendicular Lines
Intro
Volume, Surface Area & Density
Distance & cordinate plance
Right Triangles & Trigonometry
Dilations
Congruent Triangles
Rotations & Reflections
2D & 3D Solids
Circles
Overview
Congruence
Similar & Congruent Triangles
Pythagorean Theorem
Tranformations & translations
Show all topics
5
0
h
9/11/2023
Math (SAT®)
SAT Prep: Order of operations and Arithmetic Law
A comprehensive guide to mathematical problem-solving techniques and algebraic operations.
9/11/2023
132
This section covers the fundamental rules for solving mathematical expressions correctly. The order of operations follows the PG-ER-MD-AS sequence .
Definition: The order of operations is a set of rules that defines the sequence for evaluating mathematical expressions.
Example: Solving 3+6×2 requires following the correct order: first multiply 6×2=12, then add 3 to get 15.
Highlight: The commutative law states that the order doesn't matter when adding or multiplying numbers .
This section explains key mathematical properties that help simplify calculations and algebraic expressions.
Definition: The associative law states that grouping doesn't matter when adding or multiplying: +c = a+.
Example: 26++63 = + demonstrates the associative law.
Highlight: The distributive law allows multiplication to be distributed over addition: a = ab+ac.
This section details the FOIL method for multiplying binomials and solving polynomial expressions.
Definition: FOIL stands for First, Outside, Inside, Last - a technique for multiplying two binomial expressions.
Example: = x²-5x+4x-20 = x²-x-20 demonstrates the FOIL method.
Highlight: The FOIL method is a systematic approach to multiply two binomials efficiently.
Vocabulary: Binomial - an algebraic expression consisting of two terms.
Average App Rating
Students use Knowunity
In Education App Charts in 17 Countries
Students uploaded study notes
iOS User
Stefan S, iOS User
SuSSan, iOS User
h
@dodd
A comprehensive guide to mathematical problem-solving techniques and algebraic operations.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This section covers the fundamental rules for solving mathematical expressions correctly. The order of operations follows the PG-ER-MD-AS sequence .
Definition: The order of operations is a set of rules that defines the sequence for evaluating mathematical expressions.
Example: Solving 3+6×2 requires following the correct order: first multiply 6×2=12, then add 3 to get 15.
Highlight: The commutative law states that the order doesn't matter when adding or multiplying numbers .
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This section explains key mathematical properties that help simplify calculations and algebraic expressions.
Definition: The associative law states that grouping doesn't matter when adding or multiplying: +c = a+.
Example: 26++63 = + demonstrates the associative law.
Highlight: The distributive law allows multiplication to be distributed over addition: a = ab+ac.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This section details the FOIL method for multiplying binomials and solving polynomial expressions.
Definition: FOIL stands for First, Outside, Inside, Last - a technique for multiplying two binomial expressions.
Example: = x²-5x+4x-20 = x²-x-20 demonstrates the FOIL method.
Highlight: The FOIL method is a systematic approach to multiply two binomials efficiently.
Vocabulary: Binomial - an algebraic expression consisting of two terms.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This section explores solving problems involving speed, distance, and time relationships. The content demonstrates how to solve a practical word problem about traveling between home and office at different speeds.
Example: A person travels from home to office at 50 mph and returns at 60 mph. The return journey takes 10 minutes less than the outward journey.
Definition: Distance = Average Speed × Time is the fundamental formula used to solve speed-related problems.
Highlight: The solution involves setting up equations using the given speeds and solving for the unknown distance.
Vocabulary: mph - a unit used to measure speed or velocity.
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
