Question

When is the Plus sign used in CAL calculations?

a) To subtract values in complex arithmetic calculations.
b) To indicate a positive result in all calculations.
c) To denote addition or positive values in numerical calculations.
d) It is never used in CAL calculations.

Answer 1

The plus sign in calculations is used to denote addition or positive values. It is also used to represent direction in physics and separates reactants and products in chemical equations. The correct answer to the question is option c.

Step-by-step explanation:

The plus sign is used in calculations to denote addition or positive values in numerical calculations. When two positive numbers are added, such as 3+2, the answer is positive, leading to a result of 5. If two negative numbers are added, like -4 + (-2), the result is negative, in this case -6. Additionally, when numbers with opposite signs are added, such as -5 + 3, you subtract the smaller number from the larger number, and the resulting sign will be that of the larger number, which in this instance is -2.

In the context of physics or one-dimensional motion, plus and minus signs also indicate direction. For example, an object moving downward conventionally has a negative sign (-). While in chemistry, plus signs separate individual reactant and product formulas in a chemical equation.

Considering the provided options and understanding of the use of the plus sign in CAL (calculation) operations, the correct answer is c) To denote addition or positive values in numerical calculations.