We’re being asked the **difference in mass** between a nickel that weighs 4.8 g and a nickel that weighs 4.870 g.

We must consider significant figures for this problem. Remember that when dealing with addition or subtraction the least number of decimal places will determine the final answer.

**We will do the following steps to solve the problem:**

Step 1: Determine the least number of decimal places

Step 2: Subtract the two measurements

Step 3: Round off the answer

What is the difference in mass between a nickel that weighs 4.8 g and a nickel that weighs 4.870 g ?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Significant Figures concept. You can view video lessons to learn Significant Figures. Or if you need more Significant Figures practice, you can also practice Significant Figures practice problems.