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# Pre-Algebra

### Simplify expressions of real numbers and fractions

We teach you how to simplify the expressions of real numbers. In fact, mathematical calculation of fractions and complicated math,...

### Even and odd numbers

Even and odd numbers are used in arithmetic, especially in the proof of properties. In this post, we show how...

### How to teach math to children: tips for parents

In this post, we propose some tips on how to teach math to children. It pays to teach kids math...

### How to use mathematical induction?

We teach you how to use mathematical induction to prove algebraic properties. This technique is very useful and simple to...

### Elementary Mathematics: an overview

Elementary mathematics refers to courses in categories of numbers, inequalities, algebraic equations, calculus-like sequences, functions, integrals, and differential equations. If...

### Units of measurement: weight and length

Units of measurement are an important lesson in elementary school. In this article, we provide methods for how calculating weight...