Conversion of Mixed Fractions into Improper Fractions
To convert a mixed number into an improper fraction, we multiply the whole number by the denominator of the proper fraction and then to the product add the numerator of the fraction to get the numerator of the improper fraction. Its denominator is the same as the
denominator of the fractional part i.e.,
In conversion of mixed fractions into improper fractions, we may follow the following steps:
Step I: Obtain the mixed fraction.
Step II: Identify the whole number and the numerator (top) and denominator (bottom) of the proper fraction.
Step III: Multiply the whole number by the denominator of the proper fraction and add the result to the numerator of the proper fraction.
Step IV: Write the fraction having numerator equal to the number obtained in step III and denominator same as the denominator of the fraction in step II. Thus,
For Example:
1. Convert 3\(\frac{5}{6}\) into an improper fraction:
Solution:
3\(\frac{5}{6}\) = \(\frac{3 × 6 + 5}{6}\) = \(\frac{18 + 5}{6}\) = \(\frac{23}{6}\)
2. Express each of the following mixed fractions as improper fractions:
(i) Convert 8\(\frac{4}{7}\) into an improper fraction.
8\(\frac{4}{7}\) means 8 whole and \(\frac{4}{7}\).
\(\frac{4}{7}\)
Solution:
8\(\frac{4}{7}\) = 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + \(\frac{4}{7}\)
or, 8\(\frac{4}{7}\) = \(\frac{7}{7}\) + \(\frac{7}{7}\) + \(\frac{7}{7}\) + \(\frac{7}{7}\) + \(\frac{7}{7}\) + \(\frac{7}{7}\) + \(\frac{7}{7}\) + \(\frac{7}{7}\) + \(\frac{4}{7}\) = \(\frac{60}{7}\), [\(\frac{7}{7}\) means 1)
We can also convert a mixed number into an improper fraction as follows.
First multiply the whole number by denominator. Here (8 × 7) + 4 = 60. Now, put the sum as the numerator of the required improper fraction and the denominator remains the same.
8\(\frac{4}{7}\) = \(\frac{(8 × 7) + 4}{7}\) = \(\frac{56 + 4}{7}\) = \(\frac{60}{7}\)
Thus, 8\(\frac{4}{7}\) = \(\frac{60}{7}\)
(ii) 3\(\frac{2}{7}\)
= \(\frac{(3 × 7) + 2}{7}\)
= \(\frac{21 + 2}{7}\)
= \(\frac{23}{7}\)
(iii) 4\(\frac{5}{9}\)
= \(\frac{(4 × 9) + 5}{9}\)
= \(\frac{36 + 5}{9}\)
= \(\frac{41}{9}\)
(iv) 3\(\frac{2}{5}\)
= \(\frac{(3 × 5) + 2}{5}\)
= \(\frac{15 + 2}{5}\)
= \(\frac{17}{5}\)
(v) 7\(\frac{1}{4}\)
= \(\frac{(7 × 4) + 1}{4}\)
= \(\frac{28 + 1}{4}\)
= \(\frac{29}{4}\)
Conversion of a Mixed Fraction into an Improper Fraction:
3. Let us convert 5\(\frac{4}{5}\) into an improper fraction.
Step I: Multiply the whole number 5 by the denominator 5. [5 × 5 = 25]
Step II: Add the numerator to it. [25 + 4 = 29]
Step III: This gives the numerator of the improper fraction. [\(\frac{29}{7}\)]
Denominator will remain the same. So. 5\(\frac{4}{5}\) = \(\frac{29}{7}\)
Worksheet on Conversion of Mixed Fractions into Improper Fractions:
1. Convert the following into Improper Fractions:
(i) 4\(\frac{1}{3}\)
(ii) 2\(\frac{1}{2}\)
(iii) 4\(\frac{2}{3}\)
(iv) 7\(\frac{4}{9}\)
(v) 4\(\frac{5}{7}\)
Answer:
1. (i) \(\frac{13}{3}\)
(ii) \(\frac{5}{2}\)
(iii) \(\frac{14}{3}\)
(iv) \(\frac{67}{9}\)
(v) \(\frac{33}{7}\)
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● Fraction
Representations of Fractions on a Number Line
Fraction as Division
Types of Fractions
Conversion of Mixed Fractions into Improper Fractions
Conversion of Improper Fractions into Mixed Fractions
Equivalent Fractions
Interesting Fact about Equivalent Fractions
Fractions in Lowest Terms
Like and Unlike Fractions
Comparing Like Fractions
Comparing Unlike Fractions
Addition and Subtraction of Like Fractions
Addition and Subtraction of Unlike Fractions
Inserting a Fraction between Two Given Fractions
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