 Here is the fraction of three-eighths. The top of the fraction is always called the numerator. This represents the parts of the fraction we have. The bottom of the fraction is called the denominator. This represents the overall total of the fraction. Now let's try a question. Laurie took three-eighths of a plate of strawberries and Sarah took two-fifths. Between them, what fraction of strawberries do Laurie and Sarah have? There is a standard method you can use to add and subtract fractions. Always write the fractions with the numerator and the denominator, separated by a horizontal line. So we need to find the sum of three-eighths and two-fifths. Firstly, we multiply the denominators to get what we call a common denominator. So eight multiplied by five is equal to forty. We now do something called cross multiplication. We always start at the bottom right denominator and multiply by the top left numerator. So five multiplied by three equals fifteen. We now move to the bottom left denominator and multiply by the right numerator. Eight multiplied by two equals sixteen. Because this is an addition, we separate the fifteen and sixteen with an addition symbol. Add fifteen and sixteen together and this equals thirty-one. So our final fraction is thirty-one over forty.