The Metric System Explained

Converting from a smaller unit to a larger:  
larger unit <-- divide by 10 <-- smaller unit

Larger Unit    Smaller Unit

Converting from a larger unit to a smaller: 
larger unit --> multiply by 10 ---> smaller unit

Converting from one unit to another is to give their equivalent value using a different-sized unit of measurement, within the same metric system
1 hundreds = 10 tens = 100 ones