Find the distance and midpoint of the segment whose

endpoints are -4 and 18.

Find the distance between –8 and 14 on a number

line.

If the midpoint is –2 and one endpoint is 12, what

is the other endpoint?

Y is the midpoint of SW. If Y= -4 and W=20 what is

S?

SCIENTIFIC

NOTATION

What do numbers look like when

they are in scientific notation?

1.23

2.56

3.04.546

5.4564 6.3

7.48.129.33

Can a number look like….

12.3 .897

Definition Scientific Notation

A number is expressed in SN when it is in the form

,where

And n is

an integer.

a n101 10 a

ARE THE FOLLOWING

IN SCIENTIFIC NOTATION?

YES OR NO

3.54

341

.254WHY?

26WHY?

83.2

5.378

278.2

.047

.0002

.9

9

POSITIVE

OR

NEGATIVE

EXPONENTS?

.008

108

13.34

13,000

.123

456

.0001

PUT THE

FOLLOWING

IN

SCIENTIFIC NOTATION.

26

262.6 X 10

341

3413.41 X 10²

.001310

.254

83.2

1,000,000

78. 2

.047

.0002

.9

9

Why do you think scientific notation was

invented?

Write

with exponents!

.01

10 2.01

.000110 4

.110 1

Write the following in standard notation (decimal notation).

10 3

.001

102

100

10 5

.00001

104

10,000

The state of NC has approximately

19,000,000 acres of forested land. Which is another way to express

this area?

Most bacteria have a diameter of 1 to 5

microns. A micron is equal to cm.

What is the measure of a micron in SN ?

1 10 4

Earth orbits the sun at a speed of about

miles per hour. At this speed, how far does Earth travel in 24 hours?

6 7 104

.

What is another

way to write 21,763?

21763 104.

What is another way

to express 8.7 x

107

87,000,000

7 3 10 2.

X 1007 3 10 102 2.

7.3

9 4 10 102 3. x x9 4 10 1 0002. ,x x

9 4 105. x

9.1 x 10³

7 x 10²

1.3 x 10

16 108 10

8

3

.

.2 105

2 10 101 5 x

=

2 104

5.6 x 10³5,600

565.6 x 10

1.2 x 10²120

What are the coordinates of the x

intercept?

3x – 2y = -6

The following can be used as problems of the day that the students can work as they enter the room.

SCIENTIFIC

NOTATION

PROBLEMS

GREAT

JOB!!!!