Amcangyfri cynhwysedd / Estimating capacity
Amcangyfrifwch gynhwysedd rhai potelu a jygiau, wedyn mesurwch i weld pa mor gywir oedd eich amcangyfrifon / Estimate the capacity of some bottling and jugs, then measure to see how accurate your estimates were.
Dangoswch eich canlyniadau ar y daflen sydd wedi'i atodi / Note your results on the work sheet that is attatched.