What happens to multiples of 5 when they are doubled? <br />
    What about numbers that are 1 more, 2 more, 3 more and 4 more
    than a multiple of 5? <br />
    <br />
    What happens to multiples of 5 when 5 is subtracted from them?
    <br />
    What about numbers that are 1 more, 2 more, 3 more and 4 more
    than a multiple of 5? <br />