解:359÷9约等于( 39.89 ) ∵已知需求出359÷9等于几 X ÷ Y = X / Y = Z ∴359 ÷ 9 = 359 × 1/9 = 359/9 = 39.88888889 ≈ 39.89 答:359÷9约等于39.89
约等于39,359÷1O=35.9
359÷9=39.8888888889
39.888888888889