The AMBLEWEB Interactive Number Pattern Machine
Patterns for improving your mental arithmetic

When you are trying to work with bigger numbers in your head it often helps to work with numbers in the five and ten times table and then adjust the answers at the end. Use the green shapes to hide numbers and test yourself or your friends with these patterns.

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Design & DHTML Code Copyright (c) Mark Robinson - Ambleside C.E. Primary School - 1999