Standard Mathematics Primary 3 Fractions

Siti, Mei Ling, and Priya each ate a different fraction of a tray of kueh at a hawker centre. Siti ate 1/2 of the tray, Mei Ling ate 3/4, and Priya ate 5/8. Arrange these three fractions in ASCENDING order (smallest to largest).

A 1/2, 5/8, 3/4
B 1/2, 3/4, 5/8
C 5/8, 1/2, 3/4
D 3/4, 5/8, 1/2
Show Worked Solution

Worked Solution

Step 1: Find the Lowest Common Denominator (LCD) of 2, 4, and 8. The LCD is 8. Step 2: Convert each fraction to eighths: • 1/2 = 4/8 • 3/4 = 6/8 • 5/8 = 5/8 (already in eighths) Step 3: Compare the numerators: 4 < 5 < 6. Step 4: Write the fractions in ascending order using the original forms: 4/8 < 5/8 < 6/8 → 1/2 < 5/8 < 3/4 Answer: 1/2, 5/8, 3/4 Answer: 1/2, 5/8, 3/4

Correct answer: 1/2, 5/8, 3/4

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