Scientific Measurement & Density

How many significant figures does the following number have: 3 740 020

• 6

• 7

• 4

• 5

Which set of measurements of a 3.00-g standard is the most precise?

• 2.00 g, 2.01 g, 1.99 g

• 3.02 g, 2.50 g, 2.04 g

• 4.02 g, 3.03 g, 2.04 g

• 3.02 g, 3.50 g, 3.60 g

Teacher J reported that she has 25 students in her class. How many significant figures does the number reported by the teacher have?

• 2

• 5

• 25

• infinite

Round 0.010999 to four significant figures

• 0.01200

• 0.012

• 0.01100

• 0.011

Calculate 1.05 m x 0.94 m and give your answer with the correct number of significant figures.

• 0.987 

• 0.990 

• 1.0

• 0.99

What is 21.958 rounded to 2 significant figure?

• 22.0

• 22

• 21

• 21.0

How many significant figures does the following number have: 0.7100600

• 7

• 8

• 5

• 3

Calculate 756 g ÷ 14562 cm³ and give your answer with the correct number of significant figures.

• 0.05192 g/cm³

• 0.05191 g/cm³

• 0.0519 g/cm³

• 0.0520 g/cm³

Calculate 7.977 m - 0.62 m and give your answer with the correct number of significant figures.

• 7.36 m

• 7.357 m

• 7.4 m

• 7.40 m

Calculate 10.34 + 1.2306 + 8.1294 and give your answer with the correct number of significant figures.

• 19.7

• 19.70

• 19

• 20