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第1个回答 2020-04-14
解:2.05×63.5等于( 5207/40 ),【即等于130.175】
∵已知需求出2.05×63.5等于多少
X × Y = Z
∴2.05 × 63.5
= (2×100+5)/100 × (63×10+5)/10
= 205/100 × 635/10
= 41/20 × 127/2
= 5207/40
= 130.175
答:2.05×63.5等于5207/40,【即等于130.175】本回答被网友采纳
∵已知需求出2.05×63.5等于多少
X × Y = Z
∴2.05 × 63.5
= (2×100+5)/100 × (63×10+5)/10
= 205/100 × 635/10
= 41/20 × 127/2
= 5207/40
= 130.175
答:2.05×63.5等于5207/40,【即等于130.175】本回答被网友采纳