this is the first part of 2nd chapter Calculations. In this we will learn how to perform calculation using positive and negative numbers. this video helps you to understand the concept of addition and subtraction using number line.
you can find all related videos by clicking on this playlist link
https://youtube.com/playlist?list=PLVSy7yi_EyrqR3cAF1u_P06ahz6Jgno_8&si=S9huByptfX1sfSTR
