How Many Significant Figures Are in 4500?
4500= 2 significant figures (minimum)
Why 4500 has 2 sig figs
4500 has two non-zero digits (4 and 5) and two trailing zeros without a decimal point. The 4 and 5 are always significant. The two trailing zeros are ambiguous — they could be placeholders or significant digits depending on the precision of the measurement.
Rule applied
Non-zero digits are always significant (Rule 1). Trailing zeros in whole numbers are ambiguous (Rule 5). See full rule →
How to remove the ambiguity in 4500
⚠️ This number is ambiguous as written
To clarify: 4500. = 4 sig figs. 4.50 × 10³ = 3 sig figs. 4.5 × 10³ = 2 sig figs.