- Which one of these states 0.0000756 correctly in standard form?
- 7.56 × 10
^{-3}; - 7.56 × 10
^{-4}; - 7.56 × 10
^{-5}; - 7.56 × 10
^{-6}.

- 7.56 × 10
- The number 0.0004645 is given correctly to two significant figures as:
- 0.0;
- 0.000465;
- 0.00046;
- 0.00047.

- In using the equation

the mass is given to four significant figures while the speed is given to two significant figures. The correct number of significant figures to use in the answer is:- 1;
- 2;
- 3;
- 4.

- A student measures an object with a ruler with 1 mm divisions. Which one of these gives the measurement with the most appropriate precision?
- 0.4 m;
- 0.39 m
- 0.392 m;
- 0.3917 m.

- An equation has the number (3.1415…) in it. The other data have 3 significant figures, 4 significant figures and 2 significant figures respectively. Select which one student says the correct statement:
- A: You can use as many significant figures as you like because has an infinite number of significant figures;
- B: You should use three significant figures because that’s the average.
- C: You should use two significant figures because the other numbers aren’t accurate compared to .
- D: You should use two significant figures because that’s the lowest number of significant figures.

- If you have a data item that is to two significant figures, and you square it in the formula, the number of significant figures in the answer should be:
- 1
- 2
- 3
- 4

- If you have a data item that is to two significant figures, and you take the square of its reciprocal (1/x2) in the formula, the number of significant figures in the answer should be:
- 2
- 1/2
- 1/4
- 4

- Which one of these is the most reasonable answer for the distance covered by a cheetah (a large cat that sprints to catch its prey) as it chases its prey?
- 1 × 10
^{-3}m; - 100 m;
- 10 000 m;
- 1.0 × 10
^{6}m

- 1 × 10
- In a table or graph a measurement must be given as a number:
- added to the unit;
- subtracted from the unit;
- multiplied by the unit;
- divided by the unit.

- A student is carrying out a problem that has several steps. The data are to two or three significant figures. Which one of these statements is correct?
- The student should round each data item to no more than two significant figures before processing the data.
- The student should round up to three significant figures at the end of each step
- The student should round up to six significant figures at the end of the calculation.
- The student should only round up to two significant figures at the whole calculation.