If you multiply 2.5 (2 significant figures) by 3.42 (3 significant figures), how

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Question: If you multiply 2.5 (2 significant figures) by 3.42 (3 significant figures), how many significant figures should the answer have?

Options:

Correct Answer: 2

Solution:

The answer should have 2 significant figures, as the least number of significant figures in the factors is 2.

If you multiply 2.5 (2 significant figures) by 3.42 (3 significant figures), how many significant figures should the answer have?

If you multiply 2.5 (2 significant figures) by 3.42 (3 significant figures), how many significant figures should the answer have?

Step 1: Identify the number of significant figures in each number.
Step 2: 2.5 has 2 significant figures.
Step 3: 3.42 has 3 significant figures.
Step 4: Determine which number has the least significant figures.
Step 5: Since 2.5 has 2 significant figures, it is the least.
Step 6: When multiplying, the answer should have the same number of significant figures as the factor with the least significant figures.
Step 7: Therefore, the final answer should have 2 significant figures.

Significant Figures in Multiplication – When multiplying numbers, the result should have the same number of significant figures as the factor with the least significant figures.