# The Decimal/SI System La Sistema Decimal/SI

## Presentation on theme: "The Decimal/SI System La Sistema Decimal/SI"— Presentation transcript:

The Decimal/SI System La 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.

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.

equals

equals

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 unit for measuring length 1/10 or 0.1 of a meter A hand is about 1 decimeter wide

How many centimeters are in a decimeter?
one decimeter How many centimeters are in a 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 dm 1 cm 1 decimeter is equal to ____ centimeters

1 decimenter equals 10 cm

centimeter (cm) centimetro (cm)
1 centimeter is 1/100 or 0.01 of a meter A fingernail is about 1 centimeter wide

The meter (unit) divides into hundreds equal parts.

1 m = 100 cm

1 cm = 0.01 m

millimeter (mm) millimetro (mm)
A millimeter is 1/1000 or of a meter A dime is 1 millimeter thick

The meter (unit) divides into thousands equal parts.

1 m = 1000 mm

1 mm = m

1 cm = ___ mm

millimeter (mm) millimetro (mm)
1 dm 1 mm 1 cm 1 centimeter is equal to 10 millimeters. How many millimeters equal 1 decimeter?

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 Examples: decimeter, decigram

centi- (c) hundredth Examples: centimeter, centigram

milli- (m) thousandth 0.001 10-3
Examples: millimeter, milligram

micro- (µ) millionth 0.000001 10-6
Examples: micrometer, microorganisms

nano- (n) billionth Examples: nanometer, nanoorganisms

pico- (p) trillionth 0.000000000001 10-12
Example: picometer

Example: femtometer

atto- (a) quintillionths 0.000000000000001 10-18
Example: attometer

zepto (z) sextillionths 0.000000000000000001 10-21
Example: zeptometer

yocto (y) sepillionths 0.000000000000000000001 10-24
Example: yoctometer