---
title: How can I apply mathematical actions? (EM)
description: This article will present the available mathematical actions in EM
---
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# How can I apply mathematical actions? (EM)
## This article will present the available mathematical actions in EM
#### *Before you begin*
Make sure the column type is set to **Number** (click this [link](https://help.adcore.com/em-how-do-i-change-the-column-type-from-text-to-number?hsLang=en)to learn how).
#### **Math Actions for Numerical columns**
#### Math
Create mathematical actions such as addition, subtraction, multiplication, or division with numerical values within the same column or write an **Expression** to calculate across columns.
**To create a simple calculation:**
- Choose your preferred action.
- Write a value and save.
**Expression**
Expression allows us to create calculations across columns or combine values in one column and write any mathematical equations of our choosing.
To write an expression:
- Go to Math.
- Choose “Expression”.
- Enter the mathematical expression you want to have – when choosing a column to take information from, surround the column name with curly brackets **{\_\_\_}**.
- Make sure to write the column name exactly like in your feed heading (to have the exact name, choose “Copy Script Column Name” from the drop-down menu, and paste it into the brackets).
**Example:**
**NOTE:** If you change the field name, use the **ORIGINAL FIELD NAME** before the change in the expression.
**Round**
****
This function allows you to round up numbers.
To round up the entire numbers to the nearest round number, choose “0.5”:
To round up the first number that comes after the decimal point, choose “1”:
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