How this calculation works
Enter two signed decimal values and choose the operation. Subtraction and division preserve the input order. The calculation uses decimal arithmetic so a sum such as 0.1 + 0.2 is represented exactly.
Apply the chosen operation to the first number and the second number in that order.A worked example
Adding 125.5 and 24.5 gives 150.
Good to know
Enter signed decimals of up to 18 characters. Division requires a nonzero divisor and rounds to 16 significant digits.
How the inputs affect the result
Use the first operand for the quantity you start with. When working out how much remains, subtract the amount used as the second operand.
Subtraction uses the original input order.
Where the calculation applies
Enter signed decimals of up to 18 characters. Division requires a nonzero divisor and rounds to 16 significant digits.
For a related calculation, see the Scientific calculator with typed expressions.
A few questions, answered
Can I enter an entire expression?
Use the scientific calculator to enter several operations with parentheses and precedence in one expression.
What does the “Subtract the second operand” setting illustrate?
Subtraction uses the original input order.