Worksheet Chapter 2: Standard Form

1. Round 74,852 correct to (a) 2 significant figures, and (b) 3 significant figures.

2. A factory produces 2.4 × 10⁴ computer chips in a day. Calculate the total number of computer chips produced in 30 days. Express your answer in standard form.

3. True or False: The number 0.00045 has 5 significant figures.

4. Express 0.0000625 in standard form.

5. The distance from Earth to Planet X is 1.5 × 10⁸ km. A spacecraft travels at a constant speed of 5.0 × 10⁴ km/h. Calculate the time taken in hours for the spacecraft to reach Planet X, and express your answer in standard form.

6. Calculate (7.2 × 10⁻⁴) ÷ (9 × 10⁻⁷) and state your answer in standard form.

7. Fill in the blank: Standard form is written in the general form A × 10ⁿ where the range of A is ________.

8. True or False: When converting 0.0073 to standard form, the exponent of 10 will be a negative integer.

9. Which of the following numbers correctly rounds 0.03056 to 3 significant figures?

10. Calculate (4.5 × 10⁶) + (3.2 × 10⁵) and state your answer in standard form.