Here is a trick my math teacher taught me for multiples of ten while doing fractions:
How many zeroes are in the numerator? (In your case, two.)
How many zeroes in the denominator? (In your case, three.)
In your case, you have two zeroes in the numerator. Now you would take away two zeroes in the denominator. So you would get now, 1/10. I hope this helped.
