### Video Transcript

Write 7.5 as a percentage.

We recall here that one whole one,
or 1.0, is equal to 100 percent. As 7.5 is greater than this, it
will be greater than 100 percent. Seven or 7.0 must, therefore, be
equal to 700 percent. We know that 0.5 is equal to a
half, and a half of 100 percent is 50 percent. Adding these two values tells us
that 7.5 written as a percentage is 750 percent.

An alternative method here would be
to recall that to convert from a decimal to a percentage we need to multiply by
100. 7.5 multiplied by 100 is equal to
750, as all the digits move two places to the left. This confirms the correct answer of
750 percent.