**(a) 46 km**

• no leading or trailing zeroes in the measurement

• all nonzero digits are significant

• **# of significant figures = 2**

**(b) 3 dollars**

• not a measurement → exact number

• no uncertainty → no limit on the number of significant figures

• **The number is unlimited.**

**(c) 3.04x10 ^{3} m**

• scientific notation

• all digits before and after the decimal is significant

• multiple of 10 and its exponent are ignored

• **# of significant figures = 3**

**(d) 0.00405 s**

You may want to reference (Pages 21 - 26) Section 1.7 while completing this problem.

How many significant figures are in each number?

(a) 46 km

(b) 3 dollars

(c) 3.04x103 m

(d) 0.00405 s

(e) 10.26 km

(f) 40,600 m

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Significant Figures concept. You can view video lessons to learn Significant Figures. Or if you need more Significant Figures practice, you can also practice Significant Figures practice problems.