解:14×12等于( 168 ) ∵已知需求出14×12等于多少 X × (Y + Z)= X × Y + X × Z ∴14 × 12 = 14 × (10 + 2) = 14 × 10 + 14 × 2 = 140 + 28 = 168 答:14×12等于168
解:14×12等于( 168 )
∵已知需求出14×12等于多少
X × (Y + Z)= X × Y + X × Z
∴14 × 12
= 14 × (10 + 2)
= 14 × 10 + 14 × 2
= 140 + 28
= 168
答:14×12等于168