Limits of accuracy

The following number has been rounded to 1 significant figure.

800

Find the upper bound...

• 850

• 750

• 849

• 749

The following number has been rounded to 1 significant figure.

8000

Find the upper bound...

• 8500

• 7500

• 8490

• 7490

The following number has been rounded to the nearest metre.

200m

Find the upper bound...

• 200.5m

• 205m

• 250m

• 204.5m

The following number has been rounded to the nearest 10 metres.

200m

Find the upper bound...

• 200.5m

• 205m

• 250m

• 204.5m

The following number has been rounded to the nearest 5 metres.

300m

Find the upper bound...

• 302.5m

• 297.5m

• 300.5m

• 299.5m

The following number has been rounded to 1 significant figure.

0.8

Find the lower bound...

• 0.85

• 0.75

• 0.849

• 0.749

The mass of a sack of vegetables is given as 5.4 kg to the nearest tenth of a kg. The lower and upper bounds are

• 5.55 and 5.65

• 5.35 and 5.45

• 5.5 and 5.55

• 5.3 and 5.5

The following number has been rounded to 2 significant figure.

0.086

Find the lower bound...

• 0.0865

• 0.0855

• 0.08649

• 0.0895

The following number has been rounded to the nearest metre.

370m

Find the upper bound...

• 375m

• 370.5m

• 370.05m

• 375.5m

Write down the upper bound for 8 cm to the nearest mm?

• 8.5

• 8.55

• 7.5

• 7.55