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(3.75十2.35)x9.9的脱式计算怎么算

(3.75十2.35)x9.9的脱式计算怎么算(3.75十2.35)x9.9=6.1*9.9=60.39

2.35乘9.9+0.235脱式计算2.35乘9.9+0.235=2.35*9.9+2.35*0.1=2.35*(9.9+0.1)=2.35*10=23.5

8.7 x9.9十0.87=0.87*99+0.87*1=0.87*(99+1)=0.87*100=87

3.75-6.8*0.26 =3.75-1.768 =1.982 (9-2.35)*0.64 =6.65*0.64 =4.256 78.7-17.7*3.6 =78.7-63.72 =14.98 9.9*(101-9.9) =9.9*91.1 =901.89

(1)6.8*0.26+3.75=1.768+3.75,=5.518;(2)(9-2.35)*0.48,=6.65*0.48,=3.192;(3)4*O.8*2.5*1.25,=(4*2.5)*(O.8*1.25),=10*1,=10;(4)2.75*102,=2.75*(100+2),=2.75*100+2.75*2,=275+5.5,=280.5.

18.9x9.9=18.9x10-18.9x0.1=189-1.89=187.11

6.8X0.26+3.75 =1.768+3.75=5.518(9-2.35)X0.64=6.65*0.64=4.256

=25.6*(10-0.1)+2.26=256-2.56+2.26=256-(2.56-2.26)=256-0.3=255.7

3.75*(99+1)=3.75*100=375.望采纳

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