Welcome! Today we'll learn about reciprocals. The reciprocal of a number is simply one divided by that number. It's also known as the multiplicative inverse. The key property is that when you multiply a number by its reciprocal, you always get one. For example, five times one-fifth equals one.
Now let's learn how to find reciprocals. For whole numbers, simply put the number in the denominator with one on top. For example, the reciprocal of three is one-third. For fractions, just flip them! The reciprocal of two-fifths is five-halves. The reciprocal of seven is one-seventh, and the reciprocal of three-fourths is four-thirds.