Vertical Subtraction Worksheets Kindergarten: Hey kids…! Ready to subtract numbers…! Subtract means to take away numbers. You have to take away the smaller number from the bigger number. First number is always bigger than the second number. So, what you have to do is to take away the second number form the first number. Put the first number up on your fingers. Then fold the second number of fingers. How many fingers are left? This is your answer.