Float Point representaion

Question 1

Rule1

Answer 1

The order of evaluation can affect the accuracy of the result.

Question 2

Rule2

Answer 2

Whenever subtracting two numbers with the same signs or adding two numbers
with different signs, the accuracy of the result may be less than the precision avail-
able in the floating-point format:

Question 3

Rule3

Answer 3

When performing a chain of calculations involving addition, subtraction,
multiplication, and division, try to perform the multiplication and division
operations first:
x × (y + z) === x × y + x × z

Question 4

Rule4

Answer 4

When multiplying and dividing sets of numbers, try to multiply and divide numbers that have the same relative magnitudes.

Question 5

Rule5

Answer 5

When comparing two floating-point numbers for equality, always compare the values to see if the difference between two values is less than some small error value.