CSEC Mathematics - Significant Figures

How many significant figures are in the number 2016?

• 1

• 2

• 3

• 4

How many significant figures are in 0.012 km

• 1

• 2

• 3

• 4

Round 0.010229 to four significant figures.

• 1022

• 1023

• 0.01023

• 0.01022

What is 78.5 rounded to one significant figure?

• 79

• 8

• 70

• 80

Round off 509.96 to 4 significant figures.

• 509.9
• 509.0
• 510.0
• 510

Round 1047.78 to three significant figures.

• 104

• 105

• 1050

• 1050.00

Round 0.0008453 to three significant figures.

• 0.000846

• 0.00085

• 0.000845

• 0.0008

Round off 401567 to 3 significant figure.

• 567

• 401

• 402000

• 401000

What is 7399 correct to 2 significant figures?

• 73

• 74

• 7300

• 7400

0.209986 corrected to 4 significant figures is

• 0.2099

• 0.2100

• 0.2000

• 0.2090