Question

full name:
assume all numbers are measureme

1. state the number of significant fig sig figs, in each of the following va (3 marks)

	# of sig figs
49,000
560,000
0.006750
0.07
1.0010

Explanation:

Step1: Identify significant - fig rules

Non - zero digits are always significant. Zeros between non - zero digits are significant. Trailing zeros in a number with a decimal point are significant. Leading zeros are not significant. Trailing zeros in a whole number without a decimal point may or may not be significant (here we assume they are not significant for standard cases).

Step2: Analyze 45.0

Non - zero digits 4 and 5 are significant, and the trailing zero is significant as there is a decimal point. So there are 3 significant figures.

Step3: Analyze 49,000

Non - zero digits 4 and 9 are significant. Trailing zeros without a decimal point are not significant. So there are 2 significant figures.

Step4: Analyze 560,000

Non - zero digits 5 and 6 are significant. Trailing zeros without a decimal point are not significant. So there are 2 significant figures.

Step5: Analyze 0.006750

Non - zero digits 6, 7, 5 are significant, and the trailing zero is significant as there is a decimal point. Leading zeros are not significant. So there are 4 significant figures.

Step6: Analyze 0.07

Non - zero digit 7 is significant. Leading zeros are not significant. So there is 1 significant figure.

Step7: Analyze 1.0010

Non - zero digits 1 and 1 are significant, and the zeros between non - zero digits and the trailing zero are significant. So there are 5 significant figures.

Answer:

Value	# of sig figs
49,000	2
560,000	2
0.006750	4
0.07	1
1.0010	5