How many significant figures are in the number 145?

How many significant figures are in the number 0.050?

How many significant figures are in the number 100?

How many significant figures are in the number 1.234?

When adding or subtracting, the result should have the same number of decimal places as...

When multiplying or dividing, the result should have the same number of sig figs as...

Round 1.45 to 2 significant figures.

What are significant figures used for?

How many significant figures are in 100.0?

Which of these numbers has three significant figures?