1. Fractions and Decimals
COURSE 2 LESSON 3-9
The total amount of rainfall yesterday was reported as in. Express the amount of rainfall as a decimal. 1 4
Method 1  Paper and Pencil
Method 2  Calculator
or 1 ÷ 4 = 1 4
0.25 –8 20
–20
quotient
The remainder
is 0. 1 4
0.25
So, = The total amount of rainfall was 0.25 in. 1 4
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2. Fractions and Decimals
COURSE 2 LESSON 3-9 7 15
Write as a decimal.
Method 1  Paper and Pencil
Method 2  Calculator
The digit “6” repeats.
There will always
be a remainder.
or 7 ÷ 15 =
0.4666
–60
100
–90 7 15 10 7 15 7 15
So, = 0.46.
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3. Fractions and Decimals
COURSE 2 LESSON 3-9
Write as a fraction in simplest form.
Since = , =
105
1,000
= 4
105
1,000
105 ÷ 5
1,000 ÷ 5
Use the GCF to write the fraction in simplest form.
= 4 21
200
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4. Fractions and Decimals
COURSE 2 LESSON 3-9
In a survey of next year’s seventh-grade students, 0.25 said they will come to school by bus, said they will walk, said they will come in a car, and said they will ride their bicycles. Order the means of transportation from most used to least used. 5 24 1 16
bicycles 1 16 =
Use a calculator to change the fractions to decimals.
walk 5 24 =
Since > 0.25 > > , the means of transportation are car, bus, walking, and bicycle.
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5. Fractions and Decimals
COURSE 2 LESSON 3-9
Write each fraction as a decimal.
1. 2.
3. 4. 7 8 4 9
0.875
0.4 3 5 5 16
0.6
0.3125
3-9