Question

Does "more than" mean adding or subtracting?

Answer 1

It means greater than. For example: Thomas baked 50 cupcakes in 1 hour and Ezra baked 25 cupcakes in 1 hour. How many more cupcakes did Thomas bake than Ezra. The answer would be 25 cupcakes. In this example you are subtracting but " more than" is greater than so I think it's subtracting.

Answer 2

+ means: More than, Add, In Addition, Increased, In Excess, Greater. 
- means: Decreased by, Less than, Subtract, Difference, Diminished, 
........Reduced, Remainder. 
• or x means: Times as much, Percent of, Multiply, Product, Interest on. 
/ or ÷ means: Divide, Quotient, Per. 
(...) means: Quantity. 
= means: Is, Was, Equal, Will be, Results.