- Demonstrate an understanding of the addition property of equality
- Demonstrate an understanding of the multiplication property of equality
- Demonstrate the ability to convert a repeating decimal into a fraction
Practice Converting a Repeating Decimal into a Fraction
Instructions:
Answer 7/10 questions correctly to pass.
Convert each repeating decimal into a fraction.
Report your answer as a simplified fraction or a whole number (when possible).
Problem:
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The correct answer was: 0
Converting a Repeating Decimal into a Fraction:
Scenario 1:
When the series of repeating digits begins immediately after the decimal point.
- Write the repeating part of the number in the numerator of a fraction
- Write the denominator of the fraction as the same number of 9's as we have digits in the numerator
- Simplify the fraction
Scenario 2:
When the series of repeating digits does not begin immediately after the decimal point.
- Set the repeating decimal equal to a variable
- We will refer to this as equation #1
- Multiply both sides of the equation by 10n where n is the number of digits in the repeating pattern
- We will refer to this as equation #2
- Subtract away equation #1 from equation #2
- We do this by subtracting the left side of equation #1 away from the left side of equation #2 and the right side of equation #1 from the right side of equation #2
- Solve the equation, this will give us the fractional equivalent for our repeating decimal
- Simplify the fraction
Step-by-Step:
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