[G7 IS1] Group Tutorial on Significant Figures

Which of the following statements is/are ALWAYS CORRECT about the rules in significant figures?

• Any zeros used to locate the decimal point are NOT significant.

• Any zeros following the decimal point and preceding the first nonzero digit, are NOT significant.

• Zeros before the first nonzero digit are significant.

• Numbers as a result of counting have infinite significant figures.

• Zeros at the end of a number to the right of decimal point are significant.

How many significant figures are in each of the following quantities?

(a) 45,261 ft --> ​ (a)  

(b) 0.109 in. --> ​ (b)  

(c) 0.00025 kg --> ​ (c)  

(d) 2.3600 x 10³ cm. --> ​ (d)  

• 5
• 3
• 2
• 1
• 4
• 6

Which letter(s) is/are SIGNIFICANT in the given quantity?

• A

• B

• C

• D

• E

Express 15.453 To three significant figures.

Mathematical Equivalence

OFF

Express 2.35 to two significant figures.

Mathematical Equivalence

OFF

Express the result of the following calculation with the correct number of significant figures.

• 0.036

• 3.6 x 10²

• 0.0364

• 0.04

• 0.0365

a) Express 4.445 cm to three significant figures: ​ (a)  

a) Express 4.475 cm to three significant figures: ​ (b)  

• 4.44
• 4.48
• 4.45
• 4.46
• 4.47
• 4.49

A student weighs a beaker and four different substances using different balances. The individual masses and their sum are in the attached image. Express the total to the proper number of significant figures.

Mathematical Equivalence

OFF

How many hours are in 6.924 days? Express the answer in the proper number of significant figures. (Use the conversion: 1 day = 24 hours)

Mathematical Equivalence

OFF

Perform the following calculation, and express the result with the appropriate number of significant figures. Do NOT express it in scientific notation.

Mathematical Equivalence

OFF