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A mixed number is a combination of two numbers: a whole number and a proper fraction (A proper fraction is a fraction which has a denominator that is greater than the numerator, i.e., \(\frac{3}{4}\), \(\frac{5}{7}\), etc.). Moreover, a mixed number can be converted into a fraction and it always lies between two whole numbers.
For example, let’s take the mixed number \(1 \frac{3}{4}\). So, this mixed number comprises of two parts, a whole number which is 1 and a proper fraction \(\frac{3}{4}\). Now, if we convert this mixed number into an improper fraction which is \(\frac{7}{4}\), we find that it lies between the two whole numbers 1 and 2. Some other examples of a mixed number are \(2 \frac{1}{2}\), \(1 \frac{3}{4}\), \(1 \frac{4}{5}\), etc.
Parts of a Mixed Number
A mixed number consists of three distinct parts: a whole number, a numerator, and a denominator. Here, the numerator and the denominator are the parts of the proper fraction.
How to Convert Improper Fractions to Mixed Fractions
- First, we need to divide the numerator of the fraction by the denominator.
- Next, we need to write down the quotient as the whole number of the mixed fraction.
- Now, the remainder becomes the numerator and the divisor becomes the denominator of the improper part.
For example, let’s take the improper fraction \(\frac{5}{3}\). Now, when we divide 5 by 3, the quotient is 1. Also, the remainder is 2 and the divisor is 3. So, the mixed number is \(1 \frac{2}{3}\).
Steps to Divide Mixed Numbers
- Convert the mixed numbers into improper fractions, separately.
- Now divide these improper fractions by changing the division sign into the multiplication sign. To do this, just flip the second fraction.
- Write the answer in the lowest terms.
For example, let’s divide \(4 \frac{1}{3} \div 2 \frac{1}{5}\). So, the division becomes \(\left(\frac{13}{3} \div \frac{11}{5}\right) = \frac{13}{3} \times \frac{5}{11} = \frac{65}{33} = 1 \frac{32}{33}\).
Exercises for Dividing Mixed Numbers
- \( 6 \frac{5}{4} \div 2 \frac{2}{3} = \)
- \( 4 \frac{3}{4} \div 1 \frac{4}{7} = \)
- \( 7 \frac{7}{2} \div 4 \frac{3}{7} = \)
- \( 10 \frac{4}{3} \div 3 \frac{5}{10} = \)
- \( 8 \frac{7}{2} \div 7 \frac{6}{4} = \)
- \( 10 \frac{7}{2} \div 7 \frac{7}{9} = \)
- \( 7 \frac{9}{6} \div 5 \frac{4}{5} = \)
- \( 5 \frac{5}{3} \div 2 \frac{8}{7} = \)
- \( 10 \frac{8}{10} \div 1 \frac{7}{9} = \)
- \( 10 \frac{3}{3} \div 2 \frac{1}{7} = \)
- \( 6 \frac{5}{4} \times 2 \frac{2}{3} = \)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 6 \frac{5}{4} = \frac{29}{4} \) and \( 2 \frac{2}{3} = \frac{8}{3} \)
Step 2: Apply the fractions rule for multiplication, \( \frac{29}{4} \times \frac{8}{3} = \frac{232}{12} = 19 \frac{4}{12} = 19 \frac{1}{3} \)
- \( 4 \frac{3}{4} \div 1 \frac{4}{7} = \)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 4 \frac{3}{4} = \frac{19}{4} \) and \( 1 \frac{4}{7} = \frac{11}{7} \)
Step 2: Apply the fractions rule for division by multiplying with the reciprocal, \( \frac{19}{4} \times \frac{7}{11} = \frac{133}{44} = 3 \frac{1}{44} \)
- \( 7 \frac{7}{8} \div 4 \frac{3}{5} = \)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 7 \frac{7}{8} = \frac{63}{8} \) and \( 4 \frac{3}{5} = \frac{23}{5} \)
Step 2: Apply the fractions rule for division by multiplying with the reciprocal, \( \frac{63}{8} \times \frac{5}{23} = \frac{315}{184} = 1 \frac{131}{184} \)
- \( 10 \frac{4}{3} \div 3 \frac{1}{2} = \)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 10 \frac{4}{3} = \frac{34}{3} \) and \( 3 \frac{1}{2} = \frac{7}{2} \)
Step 2: Apply the fractions rule for division by multiplying with the reciprocal, \( \frac{34}{3} \times \frac{2}{7} = \frac{68}{21} \)
- \( 8 \frac{7}{8} \div 7 \frac{6}{8} = \)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 8 \frac{7}{8} = \frac{71}{8} \) and \( 7 \frac{6}{8} = \frac{62}{8} \)
Step 2: Apply the fractions rule for division by multiplying with the reciprocal, \( \frac{71}{8} \times \frac{8}{62} = \frac{71}{62} = 1 \frac{9}{62} \)
- \( 10 \frac{7}{2} \div 7 \frac{7}{9} = \frac{(10 \times 2 + 7)}{2} \div \frac{(7 \times 9 + 7)}{9} = \frac{27}{2} \div \frac{70}{9} = \frac{27}{2} \times \frac{9}{70} = \frac{243}{140}\)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 10 \frac{7}{2} = \frac{27}{2} \) and \( 7 \frac{7}{9} = \frac{70}{9} \)
Step 2: Apply the fractions rule for multiplication by flipping the second fraction, \( \frac{27}{2} \times \frac{9}{70} = \frac{243}{140} \)
- \( 7 \frac{6}{5} \div 5 \frac{4}{5} = \frac{(7 \times 5 + 6)}{5} \div \frac{(5 \times 5 + 4)}{5} = \frac{41}{5} \div \frac{29}{5} = \frac{41}{5} \times \frac{5}{29} = \frac{41}{29}\)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 7 \frac{6}{5} = \frac{41}{5} \) and \( 5 \frac{4}{5} = \frac{29}{5} \)
Step 2: Apply the fractions rule for multiplication by flipping the second fraction, \( \frac{41}{5} \times \frac{5}{29} = \frac{41}{29} \)
- \( 5 \frac{3}{2} \div 2 \frac{7}{8} = \frac{(5 \times 2 + 3)}{2} \div \frac{(2 \times 8 + 7)}{8} = \frac{13}{2} \div \frac{23}{8} = \frac{13}{2} \times \frac{8}{23} = \frac{104}{46}\)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 5 \frac{3}{2} = \frac{13}{2} \) and \( 2 \frac{7}{8} = \frac{23}{8} \)
Step 2: Apply the fractions rule for multiplication by flipping the second fraction, \( \frac{13}{2} \times \frac{8}{23} = \frac{104}{46} \)
- \( 10 \frac{8}{10} \div 1 \frac{7}{9} = \frac{(10 \times 10 + 8)}{10} \div \frac{(1 \times 9 + 7)}{9} = \frac{108}{10} \div \frac{16}{9} = \frac{108}{10} \times \frac{9}{16} = \frac{972}{160}\)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 10 \frac{8}{10} = \frac{108}{10} \) and \( 1 \frac{7}{9} = \frac{16}{9} \)
Step 2: Apply the fractions rule for multiplication by flipping the second fraction, \( \frac{108}{10} \times \frac{9}{16} = \frac{972}{160} \)
- \( 10 \frac{8}{10} \div 2 \frac{1}{3} = \frac{(10 \times 10 + 8)}{10} \div \frac{(2 \times 3 + 1)}{3} = \frac{108}{10} \div \frac{7}{3} = \frac{108}{10} \times \frac{3}{7} = \frac{324}{70}\)Solution:
Step 1: Convert mixed numbers to improper fractions, \( 10 \frac{8}{10} = \frac{108}{10} \) and \( 2 \frac{1}{3} = \frac{7}{3} \)
Step 2: Apply the fractions rule for multiplication by flipping the second fraction, \( \frac{108}{10} \times \frac{3}{7} = \frac{324}{70} \)