我要小学五年级数学简便算法试题40道快-查字典问答网
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  我要小学五年级数学简便算法试题40道快

  我要小学五年级数学简便算法试题40道

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2019-07-24 09:09
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  101×8245.2×10+52.1×100.125×3.2×254.37×99+4.374.2÷2÷3.592×25=22×11+22+288×22=

  (214+43+86)+257=

  578-53-92-255=

  361×40×125=

  199×35=

  365-(247-235)=

  48×125=

  200×22=)(88+104)+9624+42+76+58

  25*5)*2

  117*3+117*7167*2+167*3+167*5528-53-471、7.5*3.1/2.5*100

  =7.5/2.5*3.1*100

  =3*3100

  =9300

  2、36.5*6.2+28*0.365+3.65

  =36.5*6.2+2.8*3.65+3.65

  =3.65*(6.2+2.8+1)

  =3.65*1.

  =36.5

  3、999.9*599.9+199.9

  =1000×599+0.1×599.9+200-0.1

  =5990+59.9+200-0.1

  =6049.9+200-0.1

  =6249.9-0.1

  =6249.8

  999.9*599.9+199.9

  =(1000-0.1)*599.9+(200-0.1)

  =1000*599.9-0.1*599.9+200-0.1

  =599900-599.99+200-0.1

  =599900-(600-0.1)+200-0.1

  =599900-600+0.1+200-0.1

  =599900-600+200

  =599500

  999.9X599.9+199.9

  =(1000-0.1)X599.9+(200-0.1)

  =1000X599.9-0.1X599.9+200-0.1

  =599900-59.99+200-0.1

  =599900-(60-0.01)+200-0.1

  =599900-60+0.01+200-0.1

  =599900+200+0.01-60-0.1

  =600039.91

  999.9×599.9+199.9

  =(1000-0.1)×599.9+199.9

  =1000×599.9-0.1×599.9+199.9

  =599900-59.9+199.9

  =599900+140

  545-167-145

  28*225-2*225-6*225

  39*8+6*39-39*4

  127+133+184+24022x98+4454+34+(66+46)

  97×95+5×97=

2019-07-24 09:13:27

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