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Math-8 NOTES
NAME:
DATE: ______/_______/_______
What: fractions, decimals, percents, & scientific notation
Why: To review converting among fractions, decimals, percents, and numbers written
in scientific notation.
Converting Percents and decimals:
“To the left, to the left!”
ABCDEFGHIJKLMNOPQRSTUVWXYZ
“To the right, to the right!”
Decimal
1.
0.005
2.
3.26
Percent
3.
8%
4.
0.5%
5.
0.4
6.
52.2%
Converting fractions and decimals:
Decimal
1.
0.6
5/
8
2.
3.
0.008
4/
5
4.
5.
6.
Fraction
3.5
5/
6
“Take the top #,
Divide by the
bottom #!”
Your TURN:
Fraction
Decimal
Percent
7/
8
1.
2.
0.06
3.
4%
1/
3
4.
5.
4.5
6.
2.5 %
Scientific notation review:
Standard
Form
1.
2,500,000
2.
3,250,000,000
3.
.00035
4.
.0000021
Scientific
Notation
5.
3.1 x 10 5
6.
4.32 x 10 4
7.
3.1 x 10 -5
8.
2.25 x 10 -4
NAME:__________________________
“PRACTICE IT”
DATE: ______/_______/_______
Converting rational #’s and
Scientific notation
Convert the following fractions, decimals, and percents:
Fraction
Decimal
Percent
1.
3/
8
2.
0.04
3.
4.
9%
1/
5
5.
0.7
6.
7.
4.5%
2/
3
8.
0.006
9.
10.
45%
3/
4
11.
12.
0.18
7/
11
Convert the following #’s written in both standard form and scientific notation:
Standard
Form
1.
2.
Scientific
Notation
4,200
8,470,000,000
3.
.0025
4.
.000098
5.
8.1 x 10 3
6.
7.15 x 10 6
7.
1.5 x 10 -3
8.
4.25 x 10 -5
9.
10.
7,360,000
.00013
11.
4 x 10 2
12.
6.285 x 10 3
13.
6,000
14.
.012
15.
9.7 x 10 0
16.
6.7 x 10 -6
17.
2,340,000,000
18.
.00045
19.
8.9 x 10 1
20.
9.6 x 10 -4