Final answer:
The process of moving '10' from the next higher column to make a difference positive is called borrowing. It is used in subtraction when a digit in the minuend is smaller than the corresponding digit in the subtrahend.
Step-by-step explanation:
The process of moving "10" from the next higher column so that a difference will be positive is known as borrowing. When you are subtracting one number from another and the digit in the minuend (the number you are subtracting from) is smaller than the digit in the subtrahend (the number you are subtracting), you need to borrow "10" from the next higher place value. For example, if you want to subtract 35 from 402, you must first borrow "10" from the tens place because you cannot subtract 5 from 2. After borrowing, the number 402 is restructured as 3 hundreds, 9 tens, and 12 ones, and then you can subtract 35 to get the answer 367.