我要10道递等式计算题...0.64×25×7.8+2.22-查字典问答网
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  我要10道递等式计算题...0.64×25×7.8+2.22÷2.5+2.5÷2194-64.8÷1.8×0.936.72÷4.25×9.95180-705×624÷2.4-2.5×0.8(4121+2389)÷7671×15-974469×12+1492405×(3213-3189)

  我要10道递等式计算题...

  0.64×25×7.8+2.2

  2÷2.5+2.5÷2

  194-64.8÷1.8×0.9

  36.72÷4.25×9.9

  5180-705×6

  24÷2.4-2.5×0.8

  (4121+2389)÷7

  671×15-974

  469×12+1492

  405×(3213-3189)

1回答
2020-02-29 18:33
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郭宝锋

  问题补充:0.64×25×7.8+2.2

  =0.16*4*25*7.8+2.2

  =0.16*100*7.8+2.2

  =16*7.8+2.2

  =127

  2÷2.5+2.5÷2

  =4/5+5/4

  =2.05

  194-64.8÷1.8×0.9

  =194-36*0.9

  =194-32.4

  =161.6

  36.72÷4.25×9.9

  =8.64*9.9

  =85.536

  5180-705×6

  =5180-4230

  =950

  24÷2.4-2.5×0.8

  =10-2

  =8

  (4121+2389)÷7

  =6510/7

  =930

  671×15-974

  =10065-974

  =9091

  469×12+1492

  =5628+1492

  =7120

  405×(3213-3189)

  =405*24

  =9720

2020-02-29 18:35:55

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