David Jia
Academic Tutor
Education
- University of Miami, Bachelor’s degree in Business Administration.
Professional Achievements
- Featured educator for Larson Texts, Big Ideas Learning, and Big Ideas Math.
Philosophy
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Co-authored Articles (129)
How to
Use the Google Calculator
We all know by now that Google can do it all. But you might have missed the memo noting that Google can also perform basic and complex mathematic calculations. Known for its search prowess and host of other applications,...
How to
Multiply With Your Hands
Being able to multiple with your fingers is a valuable skill to have, and people have been doing it for quite a long time! We may have cellphone calculators, but in many cases it is actually easier to keep your phone in ...
How to
Convert Percents, Fractions, and Decimals
Converting numbers between percents, fractions, and decimals is a necessary basic math skill. The concepts are quite simple once you learn them. Not only will knowing how to convert small numbers help you on your test, b...
How to
Subtract
Subtraction is simply taking one number away from the other. It's pretty straightforward when you're subtracting one whole number from another, but subtraction can get a bit more complicated when you're working with frac...
How to
Take Notes from a Textbook
Your textbook probably has everything you need to know for school, but how can you take effective notes straight from the page? With a little guidance, you'll learn to pull together top-notch notes and master any textboo...
How to
Divide Fractions by a Whole Number
Dividing fractions by a whole number isn't as hard as it looks. To divide a fraction by a whole number, all you have to do is to convert the whole number into a fraction, find the reciprocal of that fraction, and multipl...
How to
Apply the Order of Operations
Lengthy expressions really aren't that hard if you just do things one at a time and in the right order. The reason this exists is so mathematicians have a universal order. Otherwise you could have two different answers ...
How to
Solve Exponents
Exponents are used when a number is multiplied by itself. Instead of writing out 4 * 4 * 4 * 4 * 4, however, you can simply write out 4^5. This is explained in the "Solving Basic Exponents" method below. Exponents make ...
How to
Organize Notes
Taking notes and keeping them organized is an important part of the schooling and the work worlds. You'll need organized notes for studying, writing essays, keeping track of work decisions, and your assignments. Keeping ...
How to Solve a Quadratic Equation: A Step-by-Step Guide
Learn factoring, the quadratic formula, or completing the squareA quadratic equation is a polynomial equation in a single variable where the highest exponent of the variable is 2. There are three main ways to solve quadr...
How to
Calculate Lotto Odds
Everyone's heard comparisons between the odds of winning the lottery and the odds of other unlikely events, like getting struck by lightning. It's true, the odds of winning the jackpot on a game like Powerball or another...
How to
Calculate the Area of a Triangle
The most common way to find the area of a triangle is to take half of the base times the height. Numerous other formulas exist, however, for finding the area of a triangle, depending on what information you know. Using i...
How to Find the Volume of a Cube from a Side, Surface Area, or Diagonals
A cube is a three-dimensional shape that has equal width, height, and length measurements. A cube has six square faces, all of which have sides of equal length and all of which meet at right angles. Finding the volume o...
How to Easily Calculate the Surface Area of a Rectangular Prism
Use this simple formula to find the SA of a rectangular prismRectangular prism (or cuboid) is the name for a six-sided, three-dimensional shape—also known as…a box! Picture a brick, a pair of game dice, or a shoebox,...
How to
Simplify a Square Root
Simplifying a square root isn't as hard as it looks. To simplify a square root, you just have to factor the number and pull the roots of any perfect squares you find out of the radical sign. Once you've memorized a few ...
How to
Multiply Square Roots
You can multiply square roots, a type of radical expression, just as you might multiply whole numbers. Sometimes square roots have coefficients (an integer in front of the radical sign), but this only adds a step to the ...
How to
Add and Subtract Square Roots
To add and subtract square roots, you need to combine square roots with the same radical term. This means that you add or subtract 2√3 and 4√3, but not 2√3 and 2√5. There are many cases where you can actually sim...
How to
Divide Square Roots
Dividing square roots is essentially simplifying a fraction. Of course, the presence of square roots makes the process a little more complicated, but certain rules allow us to work with fractions in a relatively simple w...
How to
Derive the Quadratic Formula
One of the most important skills an algebra student learns is the quadratic formula, or x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}. With the quadratic formula, solving any quadratic equation of the form ax^{2} + bx + c = 0 b...
How to Calculate the Area of Any Quadrilateral: A Step-by-Step Guide
Quickly calculate the area of any 4-sided figure If you're stuck on your geometry homework trying to figure out the area of a quadrilateral, you've come to the right place! Remember—the "area" of a shape is just how mu...
