解:580X24等于( 13920 ) ∵已知需求出580X24等于多少 X × Y = Z,即X = Z ÷ Y ∴580 × 24 = 580 × (20 + 4) = 580 × 20 + 580 × 4 = 11600 + 2320 = 13920 经检验,580 = 13920 ÷ 24符合题意 答:580X24等于13920