Re: Learning time table by the age of 11
well it will work that way as the brain has then learnt behaviour over the course of time such as performing simple calculations up to 12x, so it has what it needs to go beyond that, to transfer to more difficult areas. If you can do 12 x 9 in your head, you can do 29 x 15 (approx. 30x15) quite easily, ie 3x15 is 45, adding zero is 450, - 15 (not forgetting the original 15).. gives your answer. It's more difficult if use numbers such as 44 x 86. The higher the values are however more easier to calculate, ie 19, 18, 28, 29, 49, 78. The more difficult ones require good memory to calculate in your head.
Originally posted by Fred
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