Benchmarking on Aimsweb can be difficult without practice. This product prepares them. Number Sense Fluency Triads assesses a student’s ability to assess magnitude and compare numbers within and across number systems. Content reflects math expectations appropriate to each grade level. Because it is a timed measure, NCF–T can also measure the level of automaticity of these skills. The student answers multiple-choice math items, each requiring a comparison of a set of three numbers. Each item is presented as a triad of numbers, with the student determining whether the top number in the triad is closer in value to the bottom left number, the bottom right number, or exactly in between the two numbers. Blank pages are also provided to make modified number sets if needed.