SCIENTIFIC NOTATION GUIDED NOTES AND PRACTICE
SCIENTIFIC NOTATION GUIDED NOTES AND PRACTICE
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Includes a 2 page notes/reference with examples and practice
problems, a 2 page student guided notes with practice problems, and
a worksheet with 24 practice problems!
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SCIENTIFIC NOTATION
Regular Notation (RN)- The standard way that we write our numbers. Ex: Two Hundred and Eight Million is written - 280,000,000.
Scientific Notation (SN)- A shorthanded way of writing really large or really small numbers. In SN a number is written as the product of two factors.
Ex: 280,000,000 can be written in scientific notation as 2.8 10!.
First Factor A number that is between 1 and 10 It may or may not
be a decimal.
Second Factor Is always a power of 10. The power of the exponent tells you how many places to move the decimal point. The sign of the exponent tells you which direction
to move it.
Regular Notation ? Scientific Notation
If
Decimal
is
moved
left
Exponent
will
be
positive
If
Decimal
is
moved
to
Right
Exponent
will
be
negative
Regular Notation
420,000.
735,000,000.
.00897
.0000014
How to Change
Move the decimal after the 4 and before the 2 That is 5 places to the left
Multiply 4.2 by 10 to the 5th power Move the decimal after the 7 and before the 3
That is 8 places to the left Multiply 7.35 by 10 to the 8th power Move the decimal after the 8 and before the 9
That is 3 places to the right Multiply 8.97 by 10 to the -3rd power Move the decimal after the 1 and before the 4
That is 6 places to the right Multiply 1.4 by 10 to the -6th power
Scientific Notation
4.2 10!
7.35 10!
8.97 10!!
1.4 10!!
Copyright ? Shemiah Hale. All Rights Reserved
Scientific Notation ? Regular Notation
If
exponent
is
Negative
Move
decimal
to
the
Left
Add
zeros
where
needed.
If
exponent
is
Positive
Move
decimal
to
the
Right
Add
zeros
where
needed.
Scientific Notation
7.5 ? 10!
3.8 ? 10!
4.2 ? 10!!
7.51 ? 10!!
How to Change
Exponent is positive 5. Move the decimal 5 places to the right
Exponent is positive 4. Move the decimal 4 places to the right
Exponent is Negative 3. Move the decimal 3 places to the left.
Exponent is Negative 5. Move the decimal 5 places to the left.
Regular Notation
750,000.
38,000.
.0042
.0000751
PRACTICE:
Change from Regular Notation to Scientific Notation:
1.) 45,000
2.) 9,000,000
3.) 7,450
4.) .0000378
5.) .05
6.) 670,400
7.) 7,070,000,000
8.) .00000089
9.) .18900097
10.) 570,000,000
________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________
Change from Scientific Notation to Regular Notation:
1.) 9.46 ? 10!!
2.) 2.5 ? 10!
3.) 1.6 ? 10!!
4.) 4 ? 10 !
5.) 7.25 ? 10 !
6.) 3.2456 ? 10!!
7.) 6 ? 10!!
8.) 9.7 ? 10!
9.) 5.06 ? 10!!
10.) 8 ? 10!
________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________
Copyright ? Shemiah Hale. All Rights Reserved
SCIENTIFIC NOTATION
Regular Notation (RN)- The ____________ ______ that we write our numbers. Ex: Two Hundred and Eight Million is written - _________________
Scientific Notation (SN)- A ______________ ______ of writing really large or really small numbers. In SN a number is written as the ___________ of _______ _________.
Ex: 280,000,000 can be written in scientific notation as ___________________________
First Factor A number that is
_________ . It may or may not be ___________.
Second Factor Is always a _____________ The power of the exponent tells you ______________ to move the decimal point.
The ______ of the exponent tells you which
___________ to move it.
Regular Notation ? Scientific Notation
If
Decimal
is
moved
______________.
Exponent
will
be
___________________.
If
Decimal
is
moved
to
_____________.
Exponent
will
be
____________________.
Regular Notation
420,000.
735,000,000.
.00897
.0000014
How to Change
Move the decimal after the 4 and before the 2 That is 5 places to the left
Multiply 4.2 by 10 to the 5th power Move the decimal after the 7 and before the 3
That is 8 places to the left Multiply 7.35 by 10 to the 8th power Move the decimal after the 8 and before the 9
That is 3 places to the right Multiply 8.97 by 10 to the -3rd power Move the decimal after the 1 and before the 4
That is 6 places to the right Multiply 1.4 by 10 to the -6th power
Scientific Notation
Copyright ? Shemiah Hale. All Rights Reserved
Scientific Notation ? Regular Notation
If
exponent
is
____________________
Move
decimal
to
the
_____________
Add
zeros
where
needed.
If
exponent
is
_______________________
Move
decimal
to
the
________________
Add
zeros
where
needed.
Scientific Notation
7.5 ? 10!
3.8 ? 10!
4.2 ? 10!!
7.51 ? 10!!
How to Change
Exponent is positive 5. Move the decimal 5 places to the right
Exponent is positive 4. Move the decimal 4 places to the right
Exponent is Negative 3. Move the decimal 3 places to the left.
Exponent is Negative 5. Move the decimal 5 places to the left.
Regular Notation
PRACTICE:
Change from Regular Notation to Scientific Notation:
1.) 45,000
2.) 9,000,000
3.) 7,450
4.) .0000378
5.) .05
6.) 670,400
7.) 7,070,000,000
8.) .00000089
9.) .18900097
10.) 570,000,000
________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________
Change from Scientific Notation to Regular Notation:
1.) 9.46 ? 10!!
2.) 2.5 ? 10!
3.) 1.6 ? 10!!
4.) 4 ? 10 !
5.) 7.25 ? 10 !
6.) 3.2456 ? 10!!
7.) 6 ? 10!!
8.) 9.7 ? 10!
9.) 5.06 ? 10!!
10.) 8 ? 10!
________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________
Copyright ? Shemiah Hale. All Rights Reserved
ANSWER KEY:
Change from Regular Notation to Scientific Notation:
1.) 45,000
2.) 9,000,000
3.) 7,450
4.) .0000378
5.) .05
6.) 670,400
7.) 7,070,000,000
8.) .00000089
9.) .18900097
10.) 570,000,000
4.5 10! 9 10! 7.45 10! 3.78 10!! 5 10!! 6.704 10! 7.070 10! 8.9 10!! 1.8900097 10!! 5.7 10!
Change from Scientific Notation to Regular Notation:
1.) 9.46 ? 10!!
2.) 2.5 ? 10!
3.) 1.6 ? 10!!
4.) 4 ? 10 !
5.) 7.25 ? 10 !
6.) 3.2456 ? 10!!
7.) 6 ? 10!!
8.) 9.7 ? 10!
9.) 5.06 ? 10!!
10.) 8 ? 10!
.00000946 2500 .016 400,000 72,500 .000000032456 .006 97,000,000 .000506 800
Copyright ? Shemiah Hale. All Rights Reserved
STUDENT NAME: _____________________________ DATE: _________________
SCIENTIFIC NOTATION
CONVERT EACH NUMBER IN SCIENTIFIC NOTATION TO REGULAR NOTATION
If
exponent
is
Negative
Move
decimal
to
the
Left
Add
zeros
where
needed.
If
exponent
is
Positive
Move
decimal
to
the
Right
Add
zeros
where
needed.
1. . ! 2. . 3. . ! 4. . 5. ! 6.
____________ ____________ ____________ ____________ ____________ ____________
7. . ! 8.. 9. . ! 10. . 11. . ! 12. .
____________ ____________ ____________ ____________ ____________ ____________
CONVERT EACH NUMBER IN REGULAR NOTATION TO SCIENTIFIC NOTATION
If
Decimal
is
moved
left
Exponent
will
be
positive
If
Decimal
is
moved
to
Right
Exponent
will
be
negative
1. 0.0024 2. 5,604 3. 693.75 4. 0.087 5. 8,550,000 6. 12,000,000
____________ ____________ ____________ ____________ ____________ ____________
7. 0.0000035 8. 45,995 9. 754.256 10. 0.0088 11. 1.8907 12. 25,009
____________ ____________ ____________ ____________ ____________ ___________
Answer key
SCIENTIFIC NOTATION
CONVERT EACH NUMBER IN SCIENTIFIC NOTATION TO REGULAR NOTATION
If
exponent
is
Negative
Move
decimal
to
the
Left
Add
zeros
where
needed.
If
exponent
is
Positive
Move
decimal
to
the
Right
Add
zeros
where
needed.
1. . ! 2. . 3. . ! 4. . 5. ! 6.
0.0247 93,000,000 0.000085 2,070,000 0.00000007 300
7. . ! 8. . 9. . ! 10. . 11. . ! 12. .
0.000045 550,000 0.63 19,800 0.000024 92,000,000
CONVERT EACH NUMBER IN REGULAR NOTATION TO SCIENTIFIC NOTATION
If
Decimal
is
moved
left
Exponent
will
be
positive
If
Decimal
is
moved
to
Right
Exponent
will
be
negative
1. 0.0024 2. 5,604 3. 693.75 4. 0.087 5. 8,550,000 6. 12,000,000
. ! . . . . ! .
7. 0.0000035 8. 45,995 9. 754.256 10. 0.0088 11. 18.907 12. 25,009
. ! . . . ! . .
................
................
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