Kindergarten Vertical Subtraction Worksheets: Ready to subtract numbers! Let’s do it! We know the first number is bigger than the second number. So, we have to take away the second number from the first number. First, let’s draw the number of balloons that match the first number. Next, let’s cut the number of balloons that match the second number. Now, let’s count how many balloons are left. So, this is the answer.