August 27, 2010
Lesson 1-4
Scientific Notation
August 27, 2010
Let's explore. Complete the table and look for a
pattern.
Power of 10
1
10
2
10
10
10
10
3
4
5
6
10
7
10
Factors
10
10 x 10
10 x 10 x 10
Product
10
100
1000
August 27, 2010
What are the "quick tricks" that we
already know to multiply by 10?
what about by 100?
by 1000?
August 27, 2010
Multiply.
137
1.37
3
10 =
3
10 =
4
4,055 10 =
August 27, 2010
Multiply.
113
7
10 =
4
84 10 =
2
8 10 =
August 27, 2010
When we talk about types of data
that are very large (distance between
planets, age of earth, so on...), we
want to use scientific notation.
Scientific notation is a shorthand
that is used to write large numbers.
Numbers written in scientific
notation are written as the product
of two factors.
August 27, 2010
In SCIENTIFIC NOTATION,
the number 17,900,000 is written as
7
1.79 x 10
a number greater than
or equal to 1 but less
than 10.
a power of 10
Let's all see how it's done.
http://my.hrw.com/math06_07/nsmedia/lesson_videos/msm2/player.html?contentSrc=
6669/6669.xml
August 27, 2010
Write each number in scientific
notation.
428,000
3,000,000,000
42,000
August 27, 2010
Write each number in scientific
notation.
7
29.8 x 10
500 x 10
16,800
3
August 27, 2010
Ancient Egyptians hammered gold into
5
sheets so thin that is took 3.67 x 10
sheets to make a pile 2.5 centimeters
high. Write the number of sheets in
standard form.
August 27, 2010
Did you know?...
10
10 is about the number of stars in
our galaxy
30
10 kilograms is about the mass of
the sun
67
10 is the total number of ways of
arranging 52 cards
August 27, 2010