CTET Paper I (Classes I to V) 7 Jul 2024 Solved Paper

Concept:To compare fractions, convert them to equivalent fractions with a common denominator. The larger the numerator, the larger the fraction.Explanation:Step 1: Find the LCM of denominators 9, 21, 7, 63. LCM is 63.Step 2: Convert each fraction to denominator 63:$\frac{1}{9} = \frac{1 \times 7}{9 \times 7} = \frac{7}{63}$$\frac{1}{21} = \frac{1 \times 3}{21 \times 3} = \frac{3}{63}$$\frac{3}{7} = \frac{3 \times 9}{7 \times 9} = \frac{27}{63}$$\frac{12}{63}$ already has denominator 63.Step 3: Numerators: 27, 12, 7, 3. Arrange in decreasing order: $27 > 12 > 7 > 3$.Thus, decreasing order of fractions: $\frac{27}{63} > \frac{12}{63} > \frac{7}{63} > \frac{3}{63}$, which is $\frac{3}{7} > \frac{12}{63} > \frac{1}{9} > \frac{1}{21}$.Answer:$\frac{3}{7},\frac{12}{63},\frac{1}{9},\frac{1}{21}$ corresponds to option B.