Advanced Mathematics Primary 4 Decimals

Four students measured ribbon lengths for their school craft project. Priya cut 2.305 m, Siti cut 2.350 m, Ravi cut 2.053 m, and Wei Lin cut 2.503 m. Which list shows their ribbon lengths arranged from longest to shortest?

A Wei Lin, Siti, Priya, Ravi
B Wei Lin, Priya, Siti, Ravi
C Ravi, Priya, Siti, Wei Lin
D Siti, Wei Lin, Priya, Ravi
Show Worked Solution

Worked Solution

Step 1: Write all four lengths aligned at the decimal point. Ravi: 2.053 Priya: 2.305 Siti: 2.350 Wei Lin: 2.503 Step 2: Compare the ones digit — all are 2, so move to tenths. Ravi: 0 | Priya: 3 | Siti: 3 | Wei Lin: 5 Wei Lin (5) > Priya and Siti (3) > Ravi (0) Step 3: Break the tie between Priya (2.305) and Siti (2.350). Tenths both 3 — compare hundredths: Priya 0, Siti 5. 5 > 0, so Siti (2.350) > Priya (2.305) Step 4: Final order longest to shortest: Wei Lin (2.503) > Siti (2.350) > Priya (2.305) > Ravi (2.053)

Correct answer: Wei Lin, Siti, Priya, Ravi

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