Question

identify the number of significant figures (sig figs) in each of these values.
answer bank
80.30 0.05002 70.0 0.020 0.230 0.05 3280.0

Explanation:

Step1: Recall significant - figure rules

Non - zero digits are always significant. Zeros between non - zero digits are significant. Leading zeros (zeros before non - zero digits) are not significant. Trailing zeros in a number with a decimal point are significant.

Step2: Analyze 80.30

Non - zero digits 8, 3 are significant, and the two zeros are also significant (one between non - zero digits and one trailing with a decimal point). So, it has 4 significant figures.

Step3: Analyze 0.05002

The leading zeros are not significant. The non - zero digits 5, 2 and the two zeros between them are significant. So, it has 4 significant figures.

Step4: Analyze 70.0

The non - zero digit 7 is significant, and the two zeros are significant (one between non - zero digits and one trailing with a decimal point). So, it has 3 significant figures.

Step5: Analyze 0.020

The leading zeros are not significant. The non - zero digit 2 and the trailing zero are significant. So, it has 2 significant figures.

Step6: Analyze 0.230

The non - zero digits 2, 3 are significant, and the trailing zero is significant. So, it has 3 significant figures.

Step7: Analyze 0.05

The leading zeros are not significant. Only the non - zero digit 5 is significant. So, it has 1 significant figure.

Step8: Analyze 3280.0

The non - zero digits 3, 2, 8 are significant, and the two trailing zeros are significant (because of the decimal point). So, it has 5 significant figures.

Answer:

1 sig fig: 0.05
2 sig figs: 0.020
3 sig figs: 70.0, 0.230
4 sig figs: 80.30, 0.05002
5 sig figs: 3280.0