7.2÷1.6+0点八脱式计算?
2个回答
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解:7.2÷1.6+0点八等于( 53/10 ),【即等于5.3】
∵已知需求出7.2÷1.6+0点八等于多少
∴7.2 ÷ 1.6 + 0点八
= (7×10+2)/10 ÷ (1×10+6)/10 + 0.8
= 72/10 ÷ 16/10 + 8/10
= 36/5 ÷ 8/5 + 4/5
= 36/5 × 5/8 + 4/5
= 9/2 + 4/5
= (9×5)/(2×5)+(4×2)/(5×2)
= 45/10 + 8/10
= (45+8)/10
= 53/10
= 5.3
答:7.2÷1.6+0点八等于53/10.【即等于5.3】
∵已知需求出7.2÷1.6+0点八等于多少
∴7.2 ÷ 1.6 + 0点八
= (7×10+2)/10 ÷ (1×10+6)/10 + 0.8
= 72/10 ÷ 16/10 + 8/10
= 36/5 ÷ 8/5 + 4/5
= 36/5 × 5/8 + 4/5
= 9/2 + 4/5
= (9×5)/(2×5)+(4×2)/(5×2)
= 45/10 + 8/10
= (45+8)/10
= 53/10
= 5.3
答:7.2÷1.6+0点八等于53/10.【即等于5.3】
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