Measure what? Their mass, length, volume?
It would be more appropriate to measure 5 math textbooks in grams or kilograms, as they are smaller and more suitable units for measuring the mass of books. Milligrams would be too small a unit for this measurement.
centimetre
The answer depends on whether you want to measure the mass or the height of a stack of the books. Furthermore, maths textbooks come in all shapes and sizes.
In math and in almost all other countries, the typical units of measure are metric units of measure
I would measure it with a ruler.
The key to math is Metric!!
The metric system in Math is a system of measurement that is based on the second, kilogram and meter.
Use a ruler.
All it is is the math metric system
There is 228,600 span in metric. This is used in math class.
in math
metric