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Message: <blockquote data-quote="Laurefindel" data-source="post: 8148223" data-attributes="member: 67296">It's a slam dunk case if your target audience are third-grade kids. Subtractions are less abstract than divisions, that's true. And divisions in high denominators are increasingly harder to do. But halving is the simplest form of division, and the numbers we're asked to deal with aren't astronomical either. 42/2 is arguably easier to calculate than 42-15 in terms of complexity.But division is a more abstract concept than subtraction, this I give you, making the game slightly harder for kids under 10 and people with learning disabilities. I should know, my son has learning disability. But even for him, 42/2 is an easier operation than 42-15, because "half", while abstract, is the easiest division concept to grasp and execute.[Edit] 42 was an easy number to work with. 37, for example, is harder to half than subtracting 15 from it. Nevertheless, given the target audience, I don't think 50% (vs -5, or -10, or -15) is a huge obstacle. People experiencing great issues with mathematics will disagree. So yes, divisions are harder. I will not argue otherwise.</blockquote>