Significant Figures

Round off 4.918 m to the nearest 0.1 m

• 4.9 m

• 4.92 m

• 4.91 m

• 5 m

Round off 6.489 kg to the nearest 1/100 kg

• 6 kg

• 6.5 kg

• 6.48 kg

• 6.49 kg

Singapore's population was 5 077 000 in 2010. This value has been rounded off to the nearest 1000. What are the largest and smallest possible values of Singapore's population in 2010?

• Largest: 5 077 500

• Largest: 5 077 499

• Smallest: 5 076 499

• Smallest: 5 076 500

State the number of significant figures in 39018.

• 2

• 3

• 4

• 5

State the number of significant figures in 0.028030.

• 4

• 5

• 6

• 7

Round off 504.7 to 3 significant figures.

• 504

• 505

• 504.0

• 505.0

Round off 0.0032105 to 4 significant figures.

• 0.03211

• 0.003210

• 0.0032

• 0.003211

Round off 999.999 to 5 significant figures.

• 99999

• 1000.0

• 999.99

• 10000

The number 143 200 is correct to x significant figures. What are the possible values of x.

• 4

• 5, 6

• 4, 5, 6

• 3, 4, 5, 6