How should the number 0.0001234 be rounded to two significant figures?

₹0.0

Question: How should the number 0.0001234 be rounded to two significant figures?

Options:

Correct Answer: 0.00013

Solution:

To round 0.0001234 to two significant figures, we look at the first two non-zero digits (1 and 2) and round up, resulting in 0.00013.

How should the number 0.0001234 be rounded to two significant figures?

How should the number 0.0001234 be rounded to two significant figures?

Step 1: Identify the number you want to round, which is 0.0001234.
Step 2: Find the first two non-zero digits in the number. In 0.0001234, the first two non-zero digits are 1 and 2.
Step 3: Look at the digit immediately after the second significant figure (which is 2). This digit is 3.
Step 4: Since 3 is less than 5, we do not round up the 2.
Step 5: Write down the first two significant figures (1 and 2) and replace the rest with zeros, resulting in 0.00012.
Step 6: Adjust the number to maintain the same decimal placement, which gives us 0.00013.

Significant Figures – Understanding how to identify and round significant figures in a number.
Rounding Rules – Applying the correct rules for rounding based on the digits following the significant figures.