What tool takes over the task of doing arithmetic functions so that students can focus on higher level mathematics concepts?

The correct answer is

Spreadsheets

Step-by-step explanation:

A spreadsheet is a program in which you can input data in rows and columns and the captured data can be organised, manipulated analysed and stored. Spreadsheets where designed as the electronic form of the accounting paper spreadsheet which consists of entering data into cells arranged in rows and columns. It enables rapid analysis while not requiring manual data manipulation of a large number of collected

Examples of spreadsheet programs are

Microsoft Excel.

iWork Numbers - Apple Office Suite.

Lotus Symphony - Spreadsheets.

OpenOffice → Calc.

Google Sheets - online.

LibreOffice - > Calc.