Mathematics for IGCSE & O level - Estimation (Section 1 - No. 6)
What are the key steps involved in rounding to significant figures?
Identify the first non-zero digit from the left.
Ignore all zeros
Look at the digit immediately to the right of the target digit.
Add a zero
ব্যাখ্যা
Rounding involves identifying the significant figure and checking the digit to its right.