Subtracting Integers
Subtraction is a basic algebraic operation where we take one number away from another. If we had chocolates, and someone took chocolates away, we would have chocolates left. This is expressed as
Note that when we subtract a large number from a small number, we will have a negative number. So .
When subtracting numbers with more than one digit, it is sometimes necessary to decompose the larger unit. For example, in we want to subtract units, but there are only units available in . To solve this, we take one of the tens and break it into units which gives us in tens and units. so the result is .
What is ?
We have
Thus .
What is
We have
Thus
What is
We have
Thus
What is
When we subtract a large number from a small number, we have a negative number. Since is
thus
What is
When we subtract a large number from a small number, we have a negative number. Since is
thus