6.7×1.23如何验算?
1个回答
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解:6.7×1.23等于( 8241/1000 ),【即等于8.241】
∵已知需求出6.7×1.23等于多少
X × Y = Z,即X = Z ÷ Y
∴6.7 × 1.23
= (6×10+7)/10 × (1×100+23)/100
= 67/10 × 123/100
= (67×123)/(10×100)
= 8241/1000
= 8.241
经检验,6.7 = 8.241 ÷ 1.23符合题意
答:6.7×1.23等于8241/1000,【即等于8.241】
∵已知需求出6.7×1.23等于多少
X × Y = Z,即X = Z ÷ Y
∴6.7 × 1.23
= (6×10+7)/10 × (1×100+23)/100
= 67/10 × 123/100
= (67×123)/(10×100)
= 8241/1000
= 8.241
经检验,6.7 = 8.241 ÷ 1.23符合题意
答:6.7×1.23等于8241/1000,【即等于8.241】
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