Proportions and percents – 3ºESO

Proportions The number of breads and the price we pay are in a direct proportion (more bread more money) Complete the gaps The number of workers and the time they spend in constructing something are in an inverse proportion (more workers less time) Complete the gaps Exercise 1: Decide if the following magnitudes are inSigue leyendo «Proportions and percents – 3ºESO»

Project Problem Solving

With this project we will improve our skill in problem solving in different contexts. Since the beginning of civilization, humans had used numbers (and later math) to solve daily problems. Task 1: Beginnings of math Activity 1: Read the text and answer the questions. The idea of ​​number already existed among the first human settlers.Sigue leyendo «Project Problem Solving»

Babylonian number system

The Babylonian civilization was located in what is now Iraq. They were great mathematicians and astronomers. This numbering system appeared around 1800 BC. It is a positional number system, that is, the value of a symbol depends on its position in the number. It is a base sixty system, that is, they had symbols forSigue leyendo «Babylonian number system»

Roman number system

The Roman numeral system is still used today, when writing a century, on monuments, in the names of kings and popes. This system, based on the Etruscan numbering system, was developed in Ancient Rome. It is made up of capital letters that have different values ​​and is additive, that is, to know what number itSigue leyendo «Roman number system»

Egyptian number system

It is thought that the Egyptians introduced the base 10 numeration system at least as early as 2700 BCE (and probably much earlier). The number system was called hieroglyphics. This system made possible to carry out a record of the number of men available for work or military campaigns, to keep control of the grainsSigue leyendo «Egyptian number system»

Binary System

The binary number system has its origin in ancient times. In the 3rd century BC, the Hindu mathematician Pingala first described a binary number system very similar to the current one. In China, the philosopher Shao Yong, in the 11th century, developed hexagrams that represented the numbers from 0 to 63 using a vertical lineSigue leyendo «Binary System»

Real Numbers

The beginnings. Complete the text with the following words Rational numbers Powers and roots Real numbers There are different kinds of numbers; first you have studied whole numbers and integers, with them you can add, multiply and subtract. After that you studied rational numbers, and division became possible. But there are other operations that cannotSigue leyendo «Real Numbers»

Share as an Egyptian – Fractions

The Egyptians were great mathematicians. They solved all kinds of problems using calculations such as marking the boundaries of the land when the Nile overflowed, the construction of pyramids, trade, distribution, etc. They knew the natural numbers and they used fractions with numerator 1, the unit fractions. An Egyptian fraction is a unit fraction andSigue leyendo «Share as an Egyptian – Fractions»

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