Basic math functions: round, rounddown, roundup, sign
Excel Function ROUND
The ROUND() function is used to round a given number to the specified number of decimal places.
The ROUND() function takes two parameters; number and num_digits.
A positive value in the number of digits specifies the number of digits to the right of decimal point.
A negative value in the number of digits specifies the number of digits to the left of decimal point.
A value of 0 rounds the number to its nearest integer.
| Number | No. of digits | Formula | ROUND() |
| 23.466 | 2 | =ROUND(L4,M4) | 23.47 |
| 4 | 1 | =ROUND(L5,M5) | 4 |
| 23.098981 | -1 | =ROUND(L6,M6) | 20 |
| -887 | -1 | =ROUND(L7,M7) | -890 |
| 0.2344 | 2 | =ROUND(L8,M8) | 0.23 |
Excel Function ROUNDDOWN
The ROUNDDOWN() function is used to round a number downwards.
This function always rounds the number downwards and takes two parameters; number and digits.
If the digits is 0, then the number is rounded down to the nearest integer.
If the digits is greater than 0, then the number is rounded to the specified decimal places.
If the digits is less than 0, then the number is rounded to the left of the decimal places.
| Number | No. of digits | Formula | ROUNDDOWN() |
| 23.466 | 2 | =ROUNDDOWN(L18,M18) | 23.46 |
| 4 | 1 | =ROUNDDOWN(L19,M19) | 4 |
| 23.098981 | -1 | =ROUNDDOWN(L20,M20) | 20 |
| -887 | -1 | =ROUNDDOWN(L21,M21) | -880 |
| 0.2344 | 2 | =ROUNDDOWN(L22,M22) | 0.23 |
Excel Function ROUNDUP
The ROUNDUP() function is used to round a number upwards.
This function always rounds the number upwards and takes two parameters; number and digits.
If the digits is 0, then the number is rounded down to the nearest integer.
If the digits is greater than 0, then the number is rounded to the specified decimal places.
If the digits is less than 0, then the number is rounded to the left of the decimal places.
| Number | No. of digits | Formula | ROUNDUP() |
| 23.466 | 2 | =ROUNDUP(L32,M32) | 23.47 |
| 4 | 1 | =ROUNDUP(L33,M33) | 4 |
| 23.098981 | -1 | =ROUNDUP(L34,M34) | 30 |
| -887 | -1 | =ROUNDUP(L35,M35) | -890 |
| 0.2344 | 2 | =ROUNDUP(L36,M36) | 0.24 |
Excel Function SIGN
The SIGN() function is used to determine the arithmetic sign of the given number.
This function takes a single parameter; number.
If the number is positive, then arithmetic sign 1 is returned.
If the number is negative, then arithmetic sign -1 is returned.
If the number is 0, then 0 is returned.
| Number | Formula | SIGN() |
| 23 | SIGN(L46) | 1 |
| -22 | SIGN(L47) | -1 |
| 2 | SIGN(L48) | 1 |
| 3000 | SIGN(L49) | 1 |
| 0 | SIGN(L50) | 0 |