望采纳,谢谢
解:23×13等于( 299 ) ∵已知需求出23×13等于多少 X × Y = Z,即X = Z ÷ Y ∴23 × 13 = 23 × (10 + 3) = 23 × 10 + 23 × 3 = 230 + 69 = 299 经检验,23 = 299 ÷ 13符合题意 答:23×13等于299
23×13=299
23x13二299