Mental mathematics is part of everyday life. Children use it when checking change, estimating the cost of several items or working out how many minutes remain before an activity begins.
However, mental arithmetic is not simply about answering questions quickly.
It involves understanding numbers, selecting suitable methods and keeping track of intermediate steps.
Families investigating abacus...
Arabic
French
Spanish
Portuguese
Deutsch
Turkish
Dutch
Italiano
Russian
Romaian
Portuguese (Brazil)
Greek