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  【小学六年级上册简算题,要答案】

  小学六年级上册简算题,要答案

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2019-08-27 18:05
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  2002乘20032003-2003乘20022002

  =2002x20032003-(2002+1)20022002

  =2002x20032003-2002x20022002-20022002

  =2002(20032003-20022002)-20022002

  =2002x10001-20022002

  =2002x1001-2002x1001

  =0

  2+4+6+8+···+2004

  =1005006

  当n==1002时,

  s=1002×(1002+1)=1005006.

  即2+4+6+8+…+2004=1005006.

  0.888乘125乘73+999乘3

  125(0.8+0.08+0.008)x73+999x3

  =(100+10+1)x73+111x9x3

  =111x73+111x27

  =111x100

  =111001.6÷3/8–3/8÷6

  =1/6x(3/8-3/8)

  =1/6x0

  =0

  2.4/7×5/9+3/7×5/9

  =(4/7+3/7)x5/9

  =1x5/9

  =5/9

  3.5/2-(3/2+4/5)

  =5/2-3/2-4/5

  =1-4/5

  =1/5

  4.6×(1/2+2/3)

  =6x1/2+6x2/3

  =3+4

  =7

  5.8×4/5+8×11/5

  =8x(4/5+11/5)

  =8x3

  =24

  6.31×5/6–5/6

  =(31-1)x5/6

  =30x5/6

  =25

  7.4/5×25/16+2/3×3/4

  =5/4+1/2

  =5/4+2/4

  =7/4

  8.101×1/5–1/5×21

  =(101-21)x1/5

  =80x1/5

  =16

2019-08-27 18:06:24

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