如题所述
解: 53+23.4÷7.2等于( 225/4 ),【即等于56.25】
∵已知需求出53+23.4÷7.2等于多少
∴53 + 23.4 ÷ 7.2
= 53 + (23×10+4)/10 ÷ (7×10+2)/10
= 53 + 234/10 ÷ 72/10
= 53 + 117/5 ÷ 36/5
= 53 + 117/5 × 5/36
= 53 + 13/4
= 212/4 + 13/4
= 225/4
= 56.25
答: 53+23.4÷7.2等于225/4,【即等于56.25】
∵已知需求出53+23.4÷7.2等于多少
∴53 + 23.4 ÷ 7.2
= 53 + (23×10+4)/10 ÷ (7×10+2)/10
= 53 + 234/10 ÷ 72/10
= 53 + 117/5 ÷ 36/5
= 53 + 117/5 × 5/36
= 53 + 13/4
= 212/4 + 13/4
= 225/4
= 56.25
答: 53+23.4÷7.2等于225/4,【即等于56.25】
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第1个回答 2020-03-09
53+23.4➗7.2
=53+3.25
=56.25
=53+3.25
=56.25