With every new addition to the tech stack bringing more layers of integration and support that land on IT’s shoulders, subtraction in IT has become increasingly critical.

Watch: How do you subtract? Subtraction is when you find the difference between two numbers. Find out how to subtract, or take away, with this video. That's taking away or finding the difference.

And always check your actual answer. Subtraction is the opposite to addition. So subtraction can always be checked by adding. Check that 182 - 37 = 145 by doing the sum: 145 + 37 = 182 Look out ...

The film follows Billy Thompson, who wants to buy a new ball but first needs to purchase paints and a bat, totaling 194 pennies. He has 223 pennies and learns to subtract to determine how much money ...