The Metric Systeme International S I Prefix Symbol

The Metric Systeme International (S. I. )

Prefix Symbol Mega- M Factor Number Factor Word 1, 000 Million Kilo- 1000 Thousand 100 Hundred k Hecto- h Deca- da or dk 10 Ten Unit m, l, or g 1 One Deci- d . 1 Tenth Centi- c . 01 Hundredth Milli- . 001 thousandth m

Larger Measurements Prefix: Mega Symbol: M Meaning: Million Multiple of Base Unit: 1, 000 (how much bigger is it than one base unit? ) 3 Megameter (Mm) = 3, 000 meters

Large Measurements Prefix: Kilo Symbol: K Means: Thousand Multiple of Base Unit: 1, 000 5 Kg = 5, 000 grams

Larger Measurements Prefix: Hecto Symbol: H Means: Hundred Multiple of base unit: 100 8 Hectosecond (Hs) = 700 seconds

Large Measurements Prefix: Deka/Deca Symbol: Dk, Da Means: Ten Multiple of base unit: 10 4 Dekamole (Dkmol) = 40 moles

Small Measurements Prefix: deci Symbol: d Means: tenth Multiple of base unit: 1/10 or 0. 1 1 decimeter (dm) = 1/10 or 0. 1 meter

Small Measurements Prefix: centi Symbol: c Means: hundreth Multiple of base unit: 1/100 or 0. 01 3 centigram (cg) = 3/100 or 0. 03 grams

Small Measurements Prefix: milli Symbol: m Means: thousandth Multiple of base unit: 1/1000 or 0. 001 1 millisecond (ms) = 1/1000 second

Small Measurements Prefix: micro Symbol: Meaning: millionth Multiple of base unit: 1/1, 000 or 0. 000001 or 1 x 10^-6 1 micromole = 0. 000001 mol

Why do we use the metric system? Because it is based on multiples of 10, it is easy to change from one unit to another without calculation It is also UNIVERSAL, meaning this system makes it possible for scientists all over the world to understand agree upon measurements taken during an experiment

How many kilometers are in 100 meters? Move the decimal 3 spots to the left (climb the stairs 3 spots) We’re moving from base kilo How many mg are in 10 cg? We’re moving from centi milli Down 1 step = decimal moves right 1 spot How many dmol are in 0. 002 kmol? We’re moving from kilo deci Down 4 steps – decimal moves right 4 spots

Answers 0. 1 km 100 mg 20 dmol