Fractions, Decimals, and Percents

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Fractions, Decimals, and
Percents
Who cleared off the most land?
• Let the 10x10 grid
represent the total
amount of land that
each person was
supposed to clear in a
day. The fractions,
decimals, and
percents represent
what each person
cleared by noon.
Who cleared off the most land?
•
•
•
•
Marie = 0.68
Julia = 3/5
Oscar = 62%
Felix = 13/20
• Order, from smallest
to largest, the portion
of his/her land each
person has cleared by
lunch.
Types of Decimals
• Terminating Decimal = a decimal, such as
1/2 = 0.5, for which the division operation
results in a remainder of 0.
• Repeating Decimal = a decimal, such as
1/3 = 0.333333 or 0.3, which shows a
pattern of repeating digits.
How to Convert?
Decimal to Percent:
Percent to Decimal:
Decimal to Fraction:
Fraction to Decimal:
0.05 = 05% (or 5%)
0.254 = 25.4%
65% = 0.65
2% = 02% = 0.02
0.25 = 25/100 (then reduce)
0.06 = 6/100 (then reduce)
1.43 = 1 whole and 43/100
a) Convert to hundredths, if
able to do so easily.
b) Divide the numerator by
the denominator
Fraction to Decimal
Divide the numerator by the
denominator: 3/4…
.
4
3 .00
Fraction to Decimal
Divide the numerator by the
denominator: 4/11…
.
11
4 .00
Independent Practice
• Use a calculator to complete p. 171
(18-51) in your math journal.
• When finished, return calculator to
carrying container.
• We will correct this page in class!
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