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In mathematics education at primary school level, a number bond is a simple addition sum which has become so familiar that a child can recognise it and complete it almost instantly, with recall as automatic as that of an entry from a multiplication table in multiplication.
Added 12/7/2014 2:16:34 AM
This answer has been confirmed as correct and helpful.
Confirmed by
selymi [12/7/2014 6:25:29 AM]
