Approximations and Error

Round off 3750 to the nearest 100

• 3700

• 4000

• 3800

• 3100

Given that the population of New Zealand in 2018 was 4 749 598. A newsreporter has to communicate this information correct to the nearest 1000. What number will be communicated?

• 4 749 000

• 4 750 000

• 5 000

• 4 749 600

Round off 0.1940 to 1 decimal place.

• 0

• 0.1

• 0.2

• 0.19

Round off 17.403 to 2 decimal places

• 17

• 17.4

• 17.40

• 17.41

• 3.141592654

• 3.14

• 3.142

• 3.142

Round off 0.10526 to 2 significant figures

• 0.11

• 0.1

• 0.10

• 0.105

Work out 36/17, giving your answer to 3 significant figures.

• 2.11

• 2.12

• 2.117

• 2.118

• 44.0 cm

• 44 cm

• 43.9 cm

• 40 cm

Given that the speed of light is 299 792 458 m/s. Give your answer to 3 significant figures.

• 3 m/s

• 300 m/s

• 299 000 000 m/s

• 300 000 000 m/s

Work out 16.8 + 12.3 x 17.15 , giving your answer to 2 decimal places

_{(Hint. Remember PEMDAS/ BODMAS)}