解: 403乘24等于( 9672 ) ∵已知需求出403乘24等于多少 X × Y = Z,即X = Z ÷ Y ∴403乘24 = (400 + 3)× 24 = 400 × 24 + 3 × 24 = 9600 + 72 = 9672 经检验,403 = 9672 ÷ 24符合题意 答: 403乘24等于9672