Quantities factorunits

Quantities and Units

Quantity

• Subject / measureable

• First two columns from binas table 6

Quantity and unit

Quantity examples

• Speed v• Volume V• Time t• Temperature T• Force F• Frequency f

Grootheid en eenheid

Think about:

capital letters and small letters!!!!!!

Quantity and unit

Unit

• Size / is behind the number

• Where do you put the number

• Last two columns from Binas table 6

20 drops of water makes about 1 milliliter

Unit

• 5 drops water is about 1 mL

20 drops of water makes about 1 milliliter

1 theespoon with water is about 5 mL

1 can with water is 1 L

Unit

1 paperclip is about 1 g

a Citroen 2CV is 560 kg

Peugeot 407 SW is 1476 kg

Metric mathematics

Factor

Metric mathematics

Factor

Metric mathematics

• Letters to make numbers easier to write• See binas table 3 for value and abbreviation

(letter)• The letter comes before the factor!

• milli m x 1/1000• Kilo k x1000

Factor

What is scientific

Numbers above 10 you say are “to the power of….”

The number indicates the number of zeros after the one.

Metriek

Metric mathematics

Factor

• Now we can also write the metric system scientifically.

Metric mathematics

Factor

• micro μ 0,000001 • milli m 0,001 • centi c 0,01• deci d 0,1 • 1 • deca da 10 • hecto h 100• kilo k 1.000 • Mega M 1.000.000

Metric mathematicsFactor

Why scientific

Factor

What do you writeQuantity is number factor unit

s = 10 k ms = 10 d ms = 10 c ms = 10 m ms = 10 μ m

Factor

What does it mean

Quantity is number ● factor unit

s = 10 (k) ms = 10 (d) ms = 10 c) ms = 10 (m) ms = 10 (μ) m

Factor

Quantity = number ● factor unit

• m = 10 mg = 10 ● g = 0,01 g

• t = 10 ms = 10 ● s = 0,01 s

• s = 10 km = 10 ● m = 10.000 m

Grootheid, Factor en Eenheid

What does it meanSee binas table 3 for the factor

Quantity is number ● factor unit

m = 10 k gm = 10 () gm = 10.000 gt = 10 μ st = 10 () st = 0.00001 s

Factor

Steps of 10 m c d _ da h k

Steps of 1000 n µ m _ k M G

2 kinds of rows Point and right → Point and left

Factor