A librarian at Clementi Public Library arranged books by their catalogue numbers. The four catalogue numbers are 3 408, 3 840, 3 048 and 3 804. Which catalogue number is the smallest?
Show Worked Solution
Worked Solution
Step 1: All four numbers have the same thousands digit (3), so compare the hundreds digits next.
Step 2: The hundreds digits are: 3 408 → 4, 3 840 → 8, 3 048 → 0, 3 804 → 8.
Step 3: The smallest hundreds digit is 0, found in 3 048.
Final: The smallest catalogue number is 3 048.
Answer: 3 048
Correct answer: 3 048
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