Question

In each of the following quantities, which place value contains the estimated digit? How many significant digits are in each?

a) 0.00726
b) 5,040
c) 3.5001
d) 0.0009064

Answer 1

In the given quantities, the estimated digit is the digit that has been rounded off or approximated. The significant digits are the digits that carry meaningful information in a number. Each quantity has a different estimated digit and number of significant digits.

Step-by-step explanation:

In the given quantities, the estimated digit is the digit that has been rounded off or approximated. The significant digits are the digits that carry meaningful information in a number. Let's analyze each quantity:

a) 0.00726: The estimated digit in this number is 6, as it has been rounded off. There are four significant digits in this number (0.0072).

b) 5,040: The estimated digit in this number is 0. There are three significant digits in this number (504).

c) 3.5001: The estimated digit in this number is 1, as it has been rounded off. There are five significant digits in this number.

d) 0.0009064: The estimated digit in this number is 6, as it has been rounded off. There are four significant digits in this number (0.0009).