Understanding Significant Figures

Write 123000 in scientific notation

• 1.23 x 10⁴

• 1.23 x 10⁵

• 1.23 x 10⁶

• 1.23 x 10³

Take this number out of scientific notation and into standard notation. 3.34 x 10²

• 334

• 33.4

• 3,340

• 0.334

Rounding 45.678 to 2 significant figures

• 44

• 45

• 46

• 47

Which digits are significant in 120.00?

• Only the digits 1 and 2 are significant

• Only the digit 0 is significant

• All five digits are significant

• Only the digit 2 is significant

Leading zeros (e.g., 0.0045)

• insignificant

• non-significant

• significant

• irrelevant

Zeros between nonzero digits (e.g., 205)

• figures

• digits

• characters

• symbols

Rounding 0.07894 to 2 significant figures

• 0.078

• 0.079

• 0.08

• 0.08

Take this number out of scientific notation and into standard notation.
4.34 x 10⁶

• 4340000

• 434000

• 43400

• 43400000

Take this number out of scientific notation and into standard notation. 2.34 x 10^-4

• 0.000234

• 0.00234

• 0.0234

• 0.0000234

Multiplying @@2.1 \times 3.45@@ (sig figs in answer)

• significant figures

• decimal places

• whole numbers

• scientific notation