10TH GRADE · SI AND MAGNITUDE SCALES
Decimal prefixes
Prefixes from pico to tera and working with powers of ten.
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Basic Concepts
Decimal prefix
Part of the name of the unit that specifies the multiplier as a power of ten.
The prefix changes the scale of the unit, not the type of quantity: “milli” means multiplying by 10⁻³, and “kilo” means multiplying by 10³.
Lesson formulas
Attachments for small quantities
Pico, nano and micro define very small fractions of the original unit.
Milli, centi and deci
Milli, centi and deci subtract from the original unit.
Deca, hecto and kilo
Deca, hecto and kilo increase the original unit.
Mega, giga and tera
Mega, giga and tera set large multipliers.