Engineering applications rely heavily on numerical calculations, whose results are represented in a standard format. In numerical calculations, the equation must be dimensionally homogeneous, and the terms must be expressed in the same units. The dimensional homogeneity of the equation is maintained regardless of the equation being assessed. Numbers are rounded off to the required significant figures for the accuracy of the result; and are expressed in multiples of 103. If the number is less than one, the number is rounded off to the required significant figures and is expressed in the multiples of 10-3. According to the rule, when a number ends with a digit greater than five, it is rounded up, and when the digit is less than five, the number remains the same, up to the significant figures. When the number ends with the digit value five, it is rounded up only if the preceding number is odd, and if it is even, it remains the same up to the significant figures.