Let´s be bilingual

1.- THE DECIMAL NUMERAL SYSTEM. HOW TO WRITE NUMBERS

Nuestro sistema de numeración es DECIMAL Y POSICIONAL:

DECIMAL porque se compone de diez símbolos: 0, 1, 2, 3, ……… y diez unidades del mismo orden forman una unidad del orden superior.

1 decena = 10 unidades

1 centena = 10 decenas = 100 unidades

1 unidad de millar = 10 centenas = ……. = 1000 unidades

1 decena de millar = 10 unidades de millar = ……… = 10.000 unidades

1 centena de millar = 10 decenas de millar = ……… = 100.000 unidades

1 unidad de millón = 10 centenas de millar = ……. = 1.000.000 unidades

POSICIONAL porque el valor de cada símbolo depende de la posición en el número.

In English, the names of the place values are:

1 ten = 10 units

1 hundred = 10 tens = 100 units

1 thousand = 10 hundreds = ……. = 1000 units

1 ten-thousands = 10 thousands = ……… = 10.000 units

1 hundred-thousands = 10 ten-thousands = ……… = 100.000 units

1 million = 10 hundred-thousands = ……. = 1.000.000 units

Exercise 1. You must do only the first block of exercises. Read the instructions carefully.

When you have finished, copy the last example into your notebook.

Exercise 1. Example: …..

Exercise 2. Copy two orders and your solutions into your notebook.

Exercise 2. Order:…. Solution: …..

This blog is for the students of the bilingual section at “Virgen de Covadonga” Secondary School, in El Entrego, Asturias, Spain. They are studying their first year of their secondary compulsory education (1º ESO). They are 11-12 years old. This schoolyear they are having part of their Maths  in English. This blog is for the activities of maths.