73点9×102简便计算?
3个回答
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解:73.9 × 102等于( 37689/5 ),【即等于7537.8】
∵已知需求出73.9×102等于多少
A × (B + C)= A × B + A × C
∴73.9 × 102
= 73.9 × (100 + 2)
= (73×10+9)/10 × (100 + 2)
= 739/10 × (100 + 2)
= 739/10 × 100 + 739/10 × 2
= 7390 + 739/5
= 36950/5 + 739/5
= 37689/5
= 7537.8
答:73.9 × 102等于37689/5,【即等于7537.8】
∵已知需求出73.9×102等于多少
A × (B + C)= A × B + A × C
∴73.9 × 102
= 73.9 × (100 + 2)
= (73×10+9)/10 × (100 + 2)
= 739/10 × (100 + 2)
= 739/10 × 100 + 739/10 × 2
= 7390 + 739/5
= 36950/5 + 739/5
= 37689/5
= 7537.8
答:73.9 × 102等于37689/5,【即等于7537.8】
展开全部
73.9×102简便计算;
73.9*102
=73.9*(100+2)
=73.9*100+73.9*2
=7390+147.8
=7535.8
73.9*102
=73.9*(100+2)
=73.9*100+73.9*2
=7390+147.8
=7535.8
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展开全部
73点9×102简便计算
73.9×102
=73.9×100+73.9×2
=7390+147.8
=7537.8
73.9×102
=73.9×100+73.9×2
=7390+147.8
=7537.8
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
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