Which ASVAB subtest evaluates understanding of arithmetic operations?

The subtest that evaluates understanding of arithmetic operations is Arithmetic Reasoning. This section focuses specifically on problem-solving that involves basic arithmetic concepts, such as addition, subtraction, multiplication, and division, often applied in practical, real-world situations. It assesses not just the ability to perform calculations but also how well an individual can apply those skills to solve various types of mathematical word problems.

In contrast, Mathematics Knowledge is more focused on broader mathematical concepts and principles, including algebra and geometry, rather than just arithmetic operations. Word Knowledge assesses vocabulary and the understanding of language, while General Science looks at various scientific principles and concepts rather than mathematical skills. Therefore, Arithmetic Reasoning is the most appropriate choice for evaluating understanding specifically in arithmetic operations.