Using Significant Figures

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

• 1.0 m²
• 1.1 m²
• 1.0947 m²
• 1.095 m²

Calculate 923 g ÷ 20312 cm³ and give your answer with the correct number of significant figures.

• 0.04 g/cm³
• 0.045 g/cm³
• 0.0454 g/cm³
• 0.05 g/cm³

Calculate 12.47 m ÷ 3.2 s and give your answer with the correct number of significant figures.

• 4 m/s
• 3.9 m/s
• 3.90 m/s
• 3.897 m/s

Calculate 0.020 cm x 50 cm x 11.1 cm and give your answer with the correct number of significant figures.

• 10 cm³
• 11.1 cm³
• 11 cm³
• 11. cm³

Multiply 5.4L x 8.99g/L

• 49g
• 48.5g
• 48.55g
• 48.546g

Divide 100.00g / 2.00mL

• 50 g/mL
• 5.0 x 10¹ g/mL
• 50.0 g/mL
• 50.00 g/mL

Divide 8.953 g by 4.52mL

• 2 g/mL
• 2.0 g/mL
• 1.98 g/mL
• 1.981 g/mL

Express the product of 2.2 mm and 5.00 mm using the correct number of significant digits.

• 10 mm^2

• 11 mm^2

• 11.0 mm^ 2

• 11.00 mm^ 2

When multiplying and dividing measured quantities, the number of significant figures in the result should be equal to the number of significant figures in ____.

• all of the measurements

• the least and most precise measurements the most precise

• measurement

• the least precise measurement

Which one is rounded correctly for the following equation?

1.987 - 0.48 = ?

• 1.5

• 1.51

• 1.507

• 2