# Question Video: Subtracting From Teen Numbers by Decomposing to Make a Ten Mathematics

Let us try to find 13 take away 9. We can draw 13 dots as one group of 10 and one group of 3 dots. Now take away 9 from the group of ten dots. We are left with 1 + 3 dots which is 4 dots. So 13 − 9 = 4. Now you have a go. What is 12 − 9?