32✖️72➕64✖️14巧算? 5
3个回答
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解:32×72+64×14等于( 3200 )
∵已知需求出32×72+64×14等于多少
X × Y + X × Z = X × (Y + Z)
∴32 × 72 + 64 × 14
= 32 × 72 + (32 × 2)× 14
= 32 × 72 + 32 × 2× 14
= 32 × (72 + 2 × 14)
= 32 × (72 + 28)
= 32 × 100
= 3200
答:32×72+64×14等于3200
∵已知需求出32×72+64×14等于多少
X × Y + X × Z = X × (Y + Z)
∴32 × 72 + 64 × 14
= 32 × 72 + (32 × 2)× 14
= 32 × 72 + 32 × 2× 14
= 32 × (72 + 2 × 14)
= 32 × (72 + 28)
= 32 × 100
= 3200
答:32×72+64×14等于3200
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