Unit form is the other term for unit fraction, in which the number is written as a fraction/ ratio: <span>the top number is referred to as the numerator and the bottom number is referred to as the denominator. In our case </span> the number is 5 hundreds x 10. 5 hundreds = 500 so, we have 500 x 10. we have 10 wholes form 500. 10*500=5000 The simplest way to write number as a fraction is to multiply it with 1 but written as 10/10 for example: 5000*10/10=50000/10