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( 280@x3)x4怎么写脱式计算

=(280-120)×4 =160×4 =640

你好,很高兴为你解答 306x3x4=脱式计算 =918x4 =3672 满意采纳哦!

522÷[(56一27)x3] =522÷[29×3] =522÷87 =6

(15.4-7.8)X3.5怎么脱式计算 (15.4-7.8)X3.5 =7.6X3.5 =26.6

89×3/86脱式计算解:采用分配律, 原式=(86+3)x3/86 =86x3/86+3x3/86 =3又3/86

=160+20=180 采纳有木有

98.5一14.82÷7.6x3.2 =98.5-1.95×3.2 =98.5-6.24 =92.26

0.2x0.5=0.1 0.27-0.2=0.07 0.8x0.7=0.56 3.4x2=6.8 4.5x3=13.5 1.5x0.4=0.6 0.05x1.6=0.08 9.2-4.8=4.4 7.2=2.8=10 0.93x100=93 0.06x0.9=0.054 2.5x4=10 0.1x6.1=0.61 0.75+0.3=1.05 1.2-0.8=0.4 0.125x8=1 9.34x4=37.36 5.6x5=28 3.74-2.82=0...

2.7x3.8 =2.7x(4-0.2) =2.7x4-2.7x0.2 =10.8-0.54 =10.26

9.9X3.8 =10x3.8-0.1x3.8 =38-0.38 =37.62

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