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.
Knowledge area
Educational context
Resource type
Collections
License type
universal
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
End user
learner
Contributions
publisher
INTEF
07/12/2025
publisher
INTEF .
07/12/2025
publisher
INTEF
07/12/2025
author
In this unit, basic concepts of natural numbers are revised and the operations of addition and subtraction are practised.
07/12/2025
publisher
Instituto de Tecnologías Educativas (ITE)
07/12/2025
editor
Instituto de Tecnologías Educativas (ITE)
07/12/2025
technical validator
Mª Ana López Montes
07/12/2025
technical validator
Ángel Cabezudo Bueno
07/12/2025