34×68+17×64用简便方法如何计算机?
2个回答
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解:34×68+17×64等于( 3400 )
∵已知需求出34×68+17×64等于多少
X × Y + X × Z = X × (Y + Z)
∴34 × 68 + 17 × 64
= (17 × 2)× 68 + 17 × 64
= 17 × 2 × 68 + 17 × 64
= 17 × (2 × 68 + 64)
= 17 × (136 + 64)
= 17 × 200
= 3400
答:34×68+17×64等于3400
∵已知需求出34×68+17×64等于多少
X × Y + X × Z = X × (Y + Z)
∴34 × 68 + 17 × 64
= (17 × 2)× 68 + 17 × 64
= 17 × 2 × 68 + 17 × 64
= 17 × (2 × 68 + 64)
= 17 × (136 + 64)
= 17 × 200
= 3400
答:34×68+17×64等于3400
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