Save guides, add subjects and pick up where you left off with your BBC account. Speaker: Subtraction is what you do when you take one amount away from another. It's calculating the difference between ...

Numbers can also be subtracted using the column method. When subtracting two numbers in a place value column, if the second number is larger than the first it cannot be subtracted. You need to ...

Subtract within 1000 using various representations, strategies, and algorithms. Warm up with a Mystery Math Mistake to find a mistake made in using an algorithm for addition and subtraction. Subtract ...