脱式计算,注意使用简便算法12.5*1.34*8*210-(2.64除以2又2\1+2.9)把过程写清楚.得数写出来.(用简便运算)
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![脱式计算,注意使用简便算法12.5*1.34*8*210-(2.64除以2又2\1+2.9)把过程写清楚.得数写出来.(用简便运算)](/uploads/image/z/1259410-58-0.jpg?t=%E8%84%B1%E5%BC%8F%E8%AE%A1%E7%AE%97%2C%E6%B3%A8%E6%84%8F%E4%BD%BF%E7%94%A8%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%9512.5%2A1.34%2A8%2A210-%282.64%E9%99%A4%E4%BB%A52%E5%8F%882%5C1%2B2.9%29%E6%8A%8A%E8%BF%87%E7%A8%8B%E5%86%99%E6%B8%85%E6%A5%9A.%E5%BE%97%E6%95%B0%E5%86%99%E5%87%BA%E6%9D%A5.%28%E7%94%A8%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%29)
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脱式计算,注意使用简便算法12.5*1.34*8*210-(2.64除以2又2\1+2.9)把过程写清楚.得数写出来.(用简便运算)
脱式计算,注意使用简便算法
12.5*1.34*8*2
10-(2.64除以2又2\1+2.9)
把过程写清楚.得数写出来.(用简便运算)
脱式计算,注意使用简便算法12.5*1.34*8*210-(2.64除以2又2\1+2.9)把过程写清楚.得数写出来.(用简便运算)
12.5*1.34*8*2
=12.5*2*8*1.34
=25*8*1.34
=200*1.34
=268
10-(2.64除以2又2\1+2.9)
=10-(2.64*2/5+2.9)
=10-[(66/25)*(2/5)+2.9]
=10-[]
12.5*2*8*1.34=25*8*1.34=200*1.34=268