What ideas do you need to remind yourself when working with percentages

To find 1% of a number, divide it by 100
To find 10% of a number, divide it by 10
To find 5%, find 10% then half it
To find 25% of a number, divide it by 4
To find 50% of a number, divide it by 2
To find 20%, 30%, 40%, 60%, etc, find 10% and then multiply by 2, 3, 4, 6, etc.

~ Hope this helps!

a - base

b - exponent

so,

the base is 8the exponent is 3the exponent tells you to multiply 8 together three timesthe expanded form is 8*8*8