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Significant Figures and Rounding for JEE: 5 solved questions

Real JEE paper questions on significant figures and rounding, part of units and measurements. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2024 to 2026. No sign-in needed to read them.

What this topic asks

• Significant figures and rounding — 5 questions

All 5 questions with solutions

• Keeping the significant figures in view, the sum of the physical quantities 52.01 m, 153.2 m and 0.123 m is JEE Main 21st Jan 2nd Shift 2026
• A person measures mass of 3 different particles as 435.42 g, 226.3 g and 0.125 g. According to the rules for… JEE Main 3rd April 1st Shift 2025
• For an experimental expression y=(32.3×1125)/(27.4), where all the digits are significant. Then to report the… JEE Main 24th Jan 1st Shift 2025
• Time periods of oscillation of the same simple pendulum measured using four different measuring clocks were r… JEE Main 5th April 1st Shift 2024
• Match List-I with List-II. List-I (Number) - List-II (Significant figure); (A) 1001 - (I) 3; (B) 010.1 - (II)… JEE Main 1st Feb 2nd Shift 2024