13.6 Scientific Notation

Page 82 of your INB

Write down this problem on your

COMMUNICATORBe prepared to defend your answer

if you are called on.

How many times larger is 6 x 102 than 2 x 10-3?Show your work. Write your answer as a regular ‘ol number.

Page XX of your INBi-can

Interpret 7,600-3. What kind of a number is this? Huge or Tiny? Positive or Negative? Approximate it.

= 3x102- -3 =3x102+3=3x105 = 300,0006 x 102

2 x 10-3

Party Size 16 oz. 7 oz.

How many times BIGGER is the Party Size?

How much BIGGER is the Party Size?

167

7 16

or

How much bigger? How much smaller?

Homework issues:check #20

ITEMS of BUSINESS

Super Math intervention on Thursday. Anyone interested? We’ll talk about any math topic you choose.If you don’t have any ideas, I’ll think of some . . . 4th dimension, imaginary numbers, fractional exponents…

I can’t give I’s for this intervention since it’s considered an enrichment activity, so just come if you are available and are interested.

Have your homework out on your desk.

RE- Try this CHALLENGE question:

The mass of the sun is 2 x 1030. The mass of a proton is about 2 x 10-27. How many protons

would fit inside the sun?

2 x 1030

2 x 10-27=1 x 1057

Get into your 4-Square Groups

i-can

Page xx of your INB

Interpret 7,600-3. What kind of a number is this? Huge or tiny? Positive or negative? Approximate it.

Scientific notation:

10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

HUGE NUMBERS

a Googol 10100

0.000000000000000000000000000000000000000000054 seconds

TINY NUMBERS

PLANCKtime

5 x 10-44

The smallest measurement of time.

Scientific Notation Song

You try it.

Comparing Powers

Which is bigger?Talk about how the Power trumps the otherNumber. Because the Power is all about the numberOf zeros. The other numberOnly affects the first digitOr first few digits.

Always pick the one withThe highest power.

Special consideration to Problem #35because of the300, which adds 2 zerosTo the final answer.

Scientific Explained

You try it.

Make a wish.Mark the dot.

Then count right.

You try it.

Make a wish.Mark the dot.

Then count left.

Scientific Notation and Whole Numbers

4 x 106 = 4 x 1,000,000 = 4,000,000

6 zeros!4 x 10-6= 4 x .000001 = .000004

5 zeros!Why not 6??

You try it.

Positive powers move the decimal right.Negative powers move the decimal left.

You try it.

i-can

*#74 on homework

Interpret 7,600-3. What kind of a number is this? Huge or tiny? Positive or negative? Approximate it.

Worksheet13.6

Scientific Notation