The Decimal/SI SystemLa Sistema Decimal/SI

SI• The International System of Units,

related by multiples of ten, that allows quantities to be measured in the exact same way throughout the world.

• La sistema internacional de unidades, relacionado por múltiplos de diez, que permite que las cantidades se midan de la misma manera exacta en todo el mundo

• A SI unit for measuring mass

• One kilogram is equal to 1000 grams.

• La SI unidad de masa

• Un kilogramo es igual que 1000 gramos.

What happens to the unit (ones place) as it moves to the right side?

The unit (ones place) divides into ten equal parts.

the 10th part of a dollar, equal to 10 cents

Written: 10¢

dime

equals

10¢

equals

10¢

What happens to the tenths place as it moves to the right side?

The tenths place divides into ten equal parts.

the 100th part of a U.S. dollar

Symbol: ¢

cent

equals

1¢

equals

1¢

What happens to the hundredths place as it moves to the right side?

The hundredths place divides into ten equal parts.

equals

0.1¢

equals

0.1¢

decimeter (dm)decimetro (dm)

A hand is about

1 decimeter

wide

A unit for measuring length1/10 or 0.1 of a meter

1 meter

1 dm

How many centimeters are in a decimeter?

one decimeter

The meter (unit) divides into ten equal parts.

1 m = 10 dm

1 dm = 0.1 m

1 decimenter equals ___ cm

1 decimeter is equal to ____ centimeters

1 cm

1 dm

1 decimenter equals 10 cm

1 centimeter is 1/100 or 0.01 of a meter

centimeter (cm)centimetro (cm)

A fingernail is about 1

centimeter wide

1 cm

The meter (unit) divides into hundreds equal parts.

1 m = 100 cm

1 cm = 0.01 m

1 millimeter

A dime is 1 millimeter thick

A millimeter is 1/1000 or 0.001 of a meter

millimeter (mm)millimetro (mm)

The meter (unit) divides into thousands equal parts.

1 m = 1000 mm

1 mm = 0.001 m

1 cm = ___ mm

1 mm

•1 centimeter is equal to 10 millimeters.•How many millimeters equal 1 decimeter?

millimeter (mm)millimetro (mm)

1 cm

1 dm

1 dm = 100 mm

milliliter (mL)millilitro (mL)

• A fraction of a liter (1/1000 L)

• 1 cubic centimeter is equal 1 milliliter

Una fracción de un litro (1/1000 L)

Un centimetro cubico es igual que 1 millilitro

1 cm3 = 1 mL (cc)

Fractional Units (Decimal Places)

deci- (d)tenth

0.110-1

• Examples: decimeter, decigram

centi- (c)hundredth

0.0110-2

Examples: centimeter, centigram

milli- (m)thousandth

0.00110-3

Examples: millimeter, milligram

micro- (µ)millionth 0.000001

10-6

• Examples: micrometer, microorganisms

nano- (n)billionth

0.000000001 10-9

Examples: nanometer, nanoorganisms

pico- (p)

trillionth0.000000000001

10-12

Example: picometer

femto- (f) quadrillionths

0.00000000000000110-15

Example: femtometer

atto- (a)quintillionths

0.00000000000000110-18

Example: attometer

zepto (z)sextillionths

0.00000000000000000110-21

• Example: zeptometer

yocto (y)sepillionths

0.00000000000000000000110-24

Example: yoctometer