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Standard Form to Scientific Notation

Standard Form to Scientific Notation In order to change a number from standard form to scientific notation, you must first rewrite the number so it is between 1 and 10 by moving the decimal either to the left or right. For example, 32,581 would be changed to 3.2581. Then multiply the number by 10 raise … Read more

Changing a Percent to a Decimal

How to Change a Percent to a Decimal To convert a percentage to a decimal, simply divide the percentage by 100. A simple way to do this is to move the decimal two places to the left. Whenever you see a number, there is an implied decimal there, even if it is not shown. Take … Read more

ISEE Lower Level Practice Test

The Independent School Entrance Exam (ISEE) Lower Level is administered by the Educational Records Bureau for children in grades 5 and 6. Over 1,200 private middle schools and high schools use this exam to ensure new students are being admitted to a grade level that best fits their knowledge and abilities. Click “Start Test” above … Read more

ACT® Reading Practice Test

The Reading section of the ACT® evaluates your ability to identify key ideas and details, understand a text’s craft and structure, and comprehend the integration of knowledge and ideas. ACT® is a registered trademark belonging to ACT Education Corp. (“ACT”). ACT is not involved with or affiliated with Mometrix Media LLC, nor does ACT endorse … Read more

ACT® English Practice Test

The English section of the ACT® evaluates your standard English skills, including language knowledge, production of writing, and standard English conventions. ACT® is a registered trademark belonging to ACT Education Corp. (“ACT”). ACT is not involved with or affiliated with Mometrix Media LLC, nor does ACT endorse or sponsor any of the products or services … Read more

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Fractions Calculator

Use this calculator to help you quickly add, subtract, multiply, or divide fractions. +–×÷ Calculate Found a bug? Let us know! Knowing how to add, subtract, multiply, and divide fractions is an important math concept to understand! Take a look at these examples to see how each operation is performed: Adding Fractions Denominator is the … Read more

Basic Arithmetic

Mometrix’s basic arithmetic videos are general reviews of the concepts, ideas, and topics that may be presented on an exam. Each of these videos will give a wide-scope review of what a test taker may need to know as they prepare to take a test. Addition/Subtraction Mathematical Operations Subtracting Large Numbers Multiplication/Division Factors Mathematical Operations … Read more

Key Features of Linear Function Graphs Overview

There are many ways to graph a linear function. If the linear function is given in slope-intercept form, use the slope and y-intercept that can be identified from the function, . Linear Function Graph Sample Questions To graph , which is written in slope-intercept form, we know, the -intercept, which is where the line intersects … Read more

Difference of Squares Overview

One way to factor an expression is to use the difference of two squares. Writing a binomial as the difference of two squares simply means you rewrite a binomial as the product of two sets of parentheses multiplied by each other. For example, . The binomial can be factored into two sets of parentheses multiplied … Read more