rudimentary

being or involving basic facts or principles; "the fundamental laws of the universe"; "a fundamental incomatibility between them"; "these rudimentary truths"; "underlying principles"

शुरू-शुरू में अंकगणित सीखने वालों के बोध के अनुसार गणित के तर्किक पहलू का एक साधारण एवं प्राथमिक घटक।

I have only a rudimentary knowledge of French.In india there are villages with rudimentary sanitation.Some dinosaurs had only rudimentary teeth.