How to use the rules of indices is very useful in maths .. ..as it is a convenient way of writing down large numbers that have many repeating terms. It's quicker to write 10^6 than 1,000,000 each time. The index (sometimes called the exponent) simply says how many times the number is used in the calculation. So 10³ is the same as 10 x 10 x 10 which equals 1000. This is usually … [Read more...]