Subtracting from a Large Power of Ten

The vedic math sutra - "All from nine and the last from ten"

Subtraction is not a very complex mathematics calculation but it would get difficult when you are dealing with large numbers and even more difficult when it results in carrying over from the left hand site number.

Dice Subtraction Math Trick

This is a good magic math trick for kids who could use a little subtraction practice. It gives them an incentive to do subtraction because that is how the trick works. Good for Kids in 2nd to 3rd grades but older students like it too.