Significant Figures

Counting significant figures, rounding to a given number of them, and applying the addition and multiplication rules to a calculation.

8 questions, free, marked as you go with a worked explanation on every one.

What this covers

• significant figures

The questions

1. How many significant figures are in 0.00420?
2. How many significant figures are in 1002?
3. Round 3.14159 to 3 significant figures.
4. Round 0.004567 to 2 significant figures.
5. Use the table below, showing the same mass recorded four different ways. Which recording has the most significant figures?
6. Multiply 4.5 cm by 2.10 cm, and give the answer to the correct number of significant figures.
7. 3.2 cm is added to 1.08 cm. Which sum is expressed to the correct number of decimal places?
8. Round 260 to 1 significant figure.

Answer these free