In the calculation 12.11 - 0.3, how many decimal places should the answer have?

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Question: In the calculation 12.11 - 0.3, how many decimal places should the answer have?

Options:

Correct Answer: 1

Solution:

The number with the least decimal places is 0.3 (1 decimal place), so the answer should be rounded to 1 decimal place.

In the calculation 12.11 - 0.3, how many decimal places should the answer have?

In the calculation 12.11 - 0.3, how many decimal places should the answer have?

Step 1: Look at the numbers in the calculation: 12.11 and 0.3.
Step 2: Count the decimal places in each number.
Step 3: 12.11 has 2 decimal places (the digits after the decimal point are 1 and 1).
Step 4: 0.3 has 1 decimal place (the digit after the decimal point is 3).
Step 5: Identify which number has the least decimal places. Here, 0.3 has the least with 1 decimal place.
Step 6: When you subtract the two numbers, the answer should be rounded to the same number of decimal places as the number with the least decimal places, which is 1.

Decimal Places – Understanding how to determine the number of decimal places in a result based on the numbers involved in the calculation.
Rounding Rules – Applying rounding rules to ensure the final answer reflects the precision of the least precise measurement.