You just have to memorize this stuff, at least the ones you work with all the time. It's ok to bookmark the page so you can look up the others when you run across them. See URL in related links below.
There is a prefix every three powers of ten, except for 100, 10, 1/10, and 1/100. To go from one to another you use the LARD rule: LEFT ADD RIGHT DEDUCT. When moving the decimal to the LEFT you ADD to the power of ten. When going to the RIGHT you DEDUCT from the power of ten.
Prefix
That depends on what type of unit you are talking about (such as length, mass, time, etc.); but generally, a base unit is used (for instance, the meter for length), then prefixes (such as kilo, mega, Giga, Tera..., milli, micro, nano, pico...) are attached to create larger and smaller derived units.
The basic unit is grams.So:kilogramshectogramsdecagramsgramsdecigramscentigramsmilligramsCommentThe 'base', not 'basic', unit for mass in the SI system is the kilogram, not the gram. Further, the prefixes 'hecto', 'deca', and 'deci' are not used in SI.
Milli and kilo aren't units, they are prefixes. Metric unit for length is the metre, this means all lengths are measured in metres. A millimetre is just another way of writing 0.001 metre, it isn't a different unit its a fraction of a metre. In the same way a kilometre is an abbreviation of 1 000 metre. Unlike older systems there is one unit for each measurement. Inch, foot, yard, mile are all used to measure length but they are all distinct units. In metric there is only the metre, we add prefixes to show fractions or multiples of metres, but the unit is still metres. The prefixes between milli and kilo are, milli (0.001), base unit, and kilo((1 000). On official list there are centi (0.01), deci (0.1), deca (10), and hect (100), but these are hardly ever used, the preference being for jumps of thousands.
centi- prefix = 100 23000/100 = 230
nano- 10-9 micro- 10-6 milli- 10-3 centi- 10-2 deci- 10-1 100 deca- 101 hecto- 102 kilo- 103
Kilograms. The metric system prefixes are as follows: Kilo- Hecto- Deka- Base unit Deci- Centi- Milli- Kilo- is the largest and milli- is the smallest.
centi-, milli-, micro-, deca-, kilo-
deka Milli
Decimeter. From largest to smallest: kilo hecto deca UNIT deci centi milli
The prefixes in this case are kilo, milli, and centi. Kilo means 1000, milli means 1/1000, centi means 1/100. For example, a kilogram is 1000 gram.The prefixes in this case are kilo, milli, and centi. Kilo means 1000, milli means 1/1000, centi means 1/100. For example, a kilogram is 1000 gram.The prefixes in this case are kilo, milli, and centi. Kilo means 1000, milli means 1/1000, centi means 1/100. For example, a kilogram is 1000 gram.The prefixes in this case are kilo, milli, and centi. Kilo means 1000, milli means 1/1000, centi means 1/100. For example, a kilogram is 1000 gram.
mili, deci, centi, hecto, kilo, deka
The prefixes in order from least to greatest are milli-, centi-, deci-, unit (no prefix), deca-, hecto-, kilo-.
Prefix
Kilogram Hectogram Decagram Gram deciagram centigram millagram
denci is not an SI prefix. centi = 0.01 or one hundredth kilo = 1000 = thousand milli = 0.001 = one thousandth.
centi comes from the Latin word for 100. In the metric system it means 1/100, as the Latin prefixes mean reciprocal multipliers [1/10, 1/100, 1/1000, etc], and Greek prefixes are the 'normal' multipliers [10, 100, 1000, etc.]