To write -0.8 as a fraction like you're a child, let's first understand what the number -0.8 means. When we see a negative sign in front of a number, it means we're dealing with less than zero or numbers that are smaller than 0. So, -0.8 is a number smaller than 0 but larger than -1.

Now, to convert -0.8 into a fraction, we can start by writing it as a fraction with -8 as the numerator and 10 as the denominator. Since -0.8 is equivalent to -8/10, we can simplify this fraction by dividing both the numerator and the denominator by their greatest common divisor, which is 2 in this case.

After simplifying, we get -8 ÷ 2 = -4 and 10 ÷ 2 = 5. So, the fraction form of -0.8 is -4/5. This means that -0.8 can be represented as -4/5 when written as a fraction.

In simpler terms, imagine you have a pizza divided into 5 equal slices. If you take away 4 slices from it, you're left with -4 slices out of the original 5. This is similar to how -0.8 can be written as -4/5 in fraction form.

So, in conclusion, -0.8 as a fraction is -4/5. It's like having -4 slices of pizza out of 5 total slices.