Advertisements
Advertisements
प्रश्न
Why there is a need of rounding off figures during calculation?
उत्तर
- When performing calculations with measured quantities, the rule is that the accuracy of the final result is limited to the accuracy of the least accurate measurement.
- In other words, the final result cannot be more accurate than the least accurate number involved in the calculation.
- Sometimes, the final result of a calculation often contains figures that are not significant.
- When this occurs, the final result is rounded off.
APPEARS IN
संबंधित प्रश्न
Why is accurate measurement crucial in science?
Solve the following question:
Round off the following quantity to two significant figures:
199 g
Solve the following question:
Round off the following quantity to three significant figures:
643 cm2
Solve the following question:
Round off the following quantity to three significant figures:
0.039 m
Solve the following question:
Round off the following quantity to three significant figures:
6.398 × 10-3 km
Solve the following question:
Round off the following quantity to three significant figures:
0.0179 g
Solve the following question:
Round off the following quantity to three significant figures:
79,000 m
Solve the following question:
Round off the following quantity to three significant figures:
649.85
Solve the following question:
Round off the following quantity to three significant figures:
0.0041962 kg
Solve the following question:
Express the following sum to the appropriate number of significant figures:
319.5 g − 20460 g − 0.0639 g − 45.642 g − 4.173 g
Solve the following problem:
Express the following quantity in exponential terms.
70000.0
Solve the following problem:
Give the number of significant figures for the following.
0.002030
Solve the following problem:
Express the given quantity with or without exponents as the case may be.
1.230 × 104
Solve the following problem:
Express the given quantity with or without exponents as the case may be.
1.23 × 104
Solve the following problem:
Express the given quantity with or without exponents as the case may be.
1.89 × 10-4
Solve the following problem:
Write the following in exponential notation:
3,672,199
Solve the following problem:
Write the following in exponential notation:
198.75
Solve the following problem:
Perform the following operation:
3.971 × 107 + 1.98 × 104
Solve the following problem:
Perform the following operation:
1.05 × 10−4 − 9.7 × 10−5
Solve the following problem:
Perform the following operation:
2.12 × 106 − 3.5 × 105
Define: Least count
Define: Least count
