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## Proportionality and percentages

A ratio is a comparison of two numbers. We generally separate the two numbers in the ratio with a colon (:) or write it as a fraction. A proportion is one equality with a ratio on both sides. A perc ...

## Proportions Using Cross Product? At grade

Identify proportions by cross multiplying or simplifying ratios.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

## Losing the Tennis Ball Bounce

This project determines how much the rebound rates of tennis balls change after ten games.It is an educational content by education.com.By clicking on the title of this resource, you will be redirecte ...

## Snow to Liquid Ratio

You might notice that winter forecasts of a foot or more snow are fairly common. This is very different from rain forecasts. Even in rainy areas, single rainstorms that top five inches are unusual. If ...

## Patterns in J.S. Bach

Determine the mathematical patterns in JS Bach’s two movement preludes and fugues.It is an educational content by education.com.By clicking on the title of this resource, you will be redirected to the ...

## Introduction to fractions

You'll learn the concept of fractions and understand it as a quotient of integer numbers and as division of the unit.

At the end of the theoretical explanation you can practice or create 5 exercis ...