1. Scientific notation is mathematical shorthand.
Learning Goal: I can
Use scientific notation to express large numbers
Rewrite large numbers written in scientific notation
to standard form
Read a large number written in scientific notation
Scientific notation is mathematical shorthand.

2. Write this famous number from scientific notation
Example 1
Write this famous number from scientific notation
to standard form. 5
2.4 x 10 miles

3. Distance from earth to the sun5
2.4 x 10 miles
Distance from earth to the sun

4. EXAMPLE 2 12
x 10 miles

5. 12
x 10 miles
Light year-
a unit of astronomical distance equivalent to the distance that light travels in one year, which is × 1012 km (nearly 6 trillion miles)

6. Write this famous number in scientific notation
EXAMPLE 3
Write this famous number in scientific notation
7,000,000,000 people

7. 9
7 x 10 people
Population of world

8. EXAMPLE 4
100,000,000,000,000

9. Number of cells in human body14
1.0 x 10
Number of cells in human body

10. Write this famous number from standard form to scientific notation.
 1,988,000,000,000,000,000,000,000,000,000 kg

11.  1,988,000,000,000,000,000,000,000,000,000 kg
The Sun has a Mass of × 1030 kg.

12. Scientific notation

14. How do your write a number in Scientific notation?
Debrief:
How do your write a number in
Scientific notation?
Why is scientific notation used?

15. COPY THE PROBLEM BEFORE WORKING.