AnalyzerSentence analysis5SpansSentence四則計算を練習する。1000 character limitAnalyzeSentence四し則そく計けい算さんを練れん習しゅうする。Span Details四し則そくfour basic arithmetic operationsnoun計けい算さんcalculation; computation; counting; consideration; estimation; expectationnoun, suru verbをobject markergrammar練れん習しゅうpractice; training; drill; exercisenoun, suru verbする。light/support verb with a noun or noun-like phrasegrammar
