## Decimal numbers

Decimal numberingDecimal fractions

Reading decimal numbers

Transformation of decimal numbers to decimal fractions and vice versa

Equivalent Decimals, Decimal Comparison

## Averages

Simple arithmetic meanWeighted average

## Rational numbers

What is a rational number?Set of rational numbers and their subsets

Operations with rational numbers

## Tables

Times table from 1 to 10Table of Arabic, Cardinal and Ordinal Numbers

## Trigonometric reasons

Chicks and hypotenuseSine and Cosine

Tangent

The trigonometric ratios of 30º, 45º and 60º

## Polygon Similarity

IntroductionSimilar Polygons

Polygon similarity properties

## Operations with decimal rational numbers

Addition and SubtractionMultiplication

Exact division

Not exact division

Decimal representation of an ordinary fraction

Potentiation and square root

Numeric expressions

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## Quads

Definition, elements, concave and convexSum of inner angle measurements

Notable Quads - Parallelogram

Rectangle, Rhombus, Square and Trapezoid

Trapezoid rectangle, isosceles and scalene

Properties of parallelograms

## Angles

The angle and its elementsNull angle and shallow angle

Measurement of an angle

Using the protractor

Angle reading

Issues involving angle measurements

Unit Transformation

Transforming into mixed number

Operations (Addition and Subtraction)

Operations (multiplication and division by natural number)

Congruent angles

Consecutive angles

Adjacent Angles

Bisector of an angle

Acute, obtuse and right angle

Complementary Angles

Supplementary Angles

Angles opposite by vertex