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Physics · UNITS AND MEASUREMENT

हिन्दी

Evaluate the sum \( 436.32 \text{ g} + 227.2 \text{ g} + 0.301 \text{ g} \) by properly considering the rules of significant figures and decimal places in addition.

  1. \( 663.821 \text{ g} \)
  2. \( 663.8 \text{ g} \)
  3. \( 664 \text{ g} \)
  4. \( 663.82 \text{ g} \)

Correct answer · Option 2

\( 663.8 \text{ g} \)

Explanation

In addition or subtraction, the final result should retain as many decimal places as are there in the number with the least decimal places (227.2 has 1 decimal place). Thus 663.821 g rounds off to 663.8 g.

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