Operations with natural numbers - I
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In this unit, basic concepts of natural numbers are revised and the operations of addition and subtraction are practised. Numbers that appear in each window are generated at random. This allows you to use the window indefinitely and practise a lot of different exercises. Numbers consist of only one or two figures so the calculations can easily be done mentally. Magic squares are used in the exercises, however the main objective of this unit is to learn things about natural numbers.
Área de coñecemento
Contexto educativo
Resource type
Coleccións
Tipo de licenza
Esta obra está baixo licenza" Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
End user
learner
Achegas
publisher
INTEF
11/01/2026
publisher
INTEF .
11/01/2026
publisher
INTEF
11/01/2026
author
In this unit, basic concepts of natural numbers are revised and the operations of addition and subtraction are practised.
11/01/2026
publisher
Instituto de Tecnologías Educativas (ITE)
11/01/2026
editor
Instituto de Tecnologías Educativas (ITE)
11/01/2026
technical validator
Mª Ana López Montes
11/01/2026
technical validator
Ángel Cabezudo Bueno
11/01/2026