give a higher secondery maths shorctus trics
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always 9 square ends in 1
use box lattice method for multiplication
add the centre two numbers of 11 multiple and put the first and last number to find the 11 squares and cubes and other powers
use box lattice method for multiplication
add the centre two numbers of 11 multiple and put the first and last number to find the 11 squares and cubes and other powers
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