### Order of operations

Parenthesis, Exponents/Power, Multiplication, Division/Modulus, Addition, Subtraction

Notation example

(a^{2} * b) + c – d

1. a^{2}

2. * b

3. + c

4. – d

### Proportions

`a / A = x / X`

You’re trying to solve x. You have to cross-multiply. Be mindful of order of operations.

```
x * A = a * X
x = a * X / A
```

Because I’m so nice, I coded up a very basic proportions calculator for you. Give it a try now!

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Tags:binary, computer, formula, math, multiplication, programming, simple

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By Chongchen Saelee

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Let me explain the bare minimum concepts behind getting your first 2D game engine up and running in Nokia’s Qt envirnoment. (more…)

Tags:2d, 3d, basic, c++, concepts, engine, example, game, how to, kit, lesson, math, nokia, qt, step by step, tutorial

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Tags:2d, algorith, critical thinking, formula, function, game, math, problem solving

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