When you’re dealing with measurements, it’s important to know how many significant figures are in a number. Significant figures are the digits in a number that are meaningful and are used to express the precision of measurements. Knowing how many significant figures are in a number can help you make calculations more accurately.

In the case of 80.0, the answer is three significant figures. The leading zero before the decimal point is not considered significant as it is just used as a placeholder. The 8, 0, and decimal point all count as significant figures, making the total three.

When you’re dealing with measurements, it’s important to include the correct number of significant figures. Significant figures are used to express the precision of the measurement. If you have three significant figures, it means that the measurement is accurate to the nearest tenth. For example, if you measure the length of an object to be 80.0 cm, then you know that the length is accurate to within 0.1 cm.

When you’re dealing with calculations involving measurements, it’s important to make sure that you include the correct number of significant figures. If you don’t, then you’ll end up with inaccurate results. For example, if you have a measurement that is accurate to the nearest tenth, then you should include three significant figures in your calculations. If you use four significant figures, then your results may be inaccurate.

It’s also important to know how to round off numbers correctly when dealing with significant figures. For example, if you have a number that is accurate to the nearest tenth, then you should round it off to the nearest hundredth. This means that 80.0 would be rounded off to 80.00, as this is the nearest hundredth.

In summary, 80.0 has three significant figures. The leading zero before the decimal point is not considered significant and only the 8, 0, and decimal point count. When dealing with calculations involving measurements, it’s important to make sure that you include the correct number of significant figures and round off numbers correctly. This will ensure that you get accurate results from your calculations.

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