Conversion should include

U.S. customary and metric measurements of length, weight, volume, and temperature
sizes of particular measurements relative to their basic units (e.g., deca-, hecto-, kilo-, mega-, deci-, centi-, milli-, and micro-)
symbols associated with different measurements.

Process/Skill Questions:

What are the processes of converting lengths from one system to another?
What is the mathematical relationship among the units of length in the metric system? How does this simplify the calculations involved?

NCCER Core Curriculum: Introductory Craft Skills, 2015

00102-15 Introduction to Construction Math

Module Two (00102-15) introduces trainees to basic math skills needed in the construction environment. The module reviews whole numbers and fractions; working with decimals; the four primary math operations; reading rulers and tape measures; the Imperial and metric units of measurement; basic geometric figures; and area and volume calculations for two-dimensional and three-dimensional objects.

NCCER Masonry Standards

Level One, Module Four (28103-13): Measurements, Drawings, and Specifications

This module provides a review of the calculation of distances and areas common in masonry work, describes the information found on residential construction drawings, and reviews the role of specifications, standards, and codes.