如题所述
解:49×99+99等于( 4950 )
∵已知需求出49×99+99等于多少
X × Y + X = X × (Y + 1)
∴49 × 99 + 99
= 99 × (49 + 1)
= 99 × 50
= 4950
答:49×99+99等于4950
∵已知需求出49×99+99等于多少
X × Y + X = X × (Y + 1)
∴49 × 99 + 99
= 99 × (49 + 1)
= 99 × 50
= 4950
答:49×99+99等于4950
温馨提示:答案为网友推荐,仅供参考