Significant Figures and Scientific Notation

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

How many significant figures does the following number have: 100.00210

• 7
• 5
• 10
• 8

How many significant figures does the following number have: 100.3

• 4
• 3
• 5
• 2

Round 1009 to three sig figs

• 100
• 101
• 1010
• 1000

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

Calculate 1.23 m x 0.89 m and give your answer with the appropriate number of significant figures.

• 1.0 m²
• 1.1 m²
• 1.0947 m²
• 1.09 m²

Calculate 5.50 cm + 5.50 cm and give your answer with the appropriate number of significant figures.

• 11 cm
• 11.0 cm
• 11.00 cm
• 11.000 cm

When performing the calculation 34.530 g + 12.1 g + 1222.34 g the final answer must have

• Three significant figures
• One decimal place
• Two decimal places
• Three decimal places

Calculate 123000 m x 3234 m and give your answer with the appropriate number of significant figures.

• 3.97 x 10^-7 m²
• 39800000 m²
• 398 m²
• 3.98 x 10⁸ m²

Solve & Round to Correct Sig Figs.
4.5 x 2.34 = 

• 11
• 10.52
• 10.5
• 10