Question

Round each number to 4 significant digits a. 431,801 b. 10,235.0 c. 1.0348 d. 0.004384010 e. 0.00078100 f. 0.0098641

Answer 1

To round each number to 4 significant digits, identify the fourth significant digit from the left and round up or down based on the fifth digit. Replace all digits to the right of the fourth significant digit with zeros.

Step-by-step explanation:

To round each number to 4 significant digits, follow these steps:

1. Identify the fourth significant digit from the left.
2. If the fifth digit is greater than or equal to 5, round up. If it is less than 5, round down.
3. Replace all the digits to the right of the fourth significant digit with zeros.

Applying these steps to the given numbers:

a. 431,801 becomes 431,800

b. 10,235.0 becomes 10,240

c. 1.0348 becomes 1.035

d. 0.004384010 becomes 0.004384

e. 0.00078100 becomes 0.000781

f. 0.0098641 becomes 0.009864

Answer 2

1) Rounding those number to 4 significant digits

a. 431,801 = 431,800

b. 10,235.0 = 10240

c. 1.0348 = 1.035

d. 0.004384010 = 0.0040

e. 0.00078100 =0.0008

f. 0.0098641​ =0.009

The criteria are rounding up to those numbers greater than or equal to 5, and considering the how low is the number or how great it is.