【脱式计算题带答案】20道脱式计算及答案(带过程).

发布时间:2021-03-30 22:44:13

20道脱式计算及答案(带过程). 数学

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【答案】 62×7.1+2.9,
  =440.2+2.9,
  =443.1;
  4.2×0.25,
  =(4+0.2)×0.25,
  =4×0.25+0.2×0.25,
  =1+0.05,
  =1.05;
  5.2×4.3+0.8×4.3,
  =(5.2+0.8)×4.3,
  =6×4.3,
  =25.8.
  8.5+1.5÷0.25×4,
  =8.5+6×4,
  =8.5+24,
  =32.5.
  0.25×0.8+2.5%
  =0.2+2.5%,
  =0.225;
  32×125×2.5,
  =4×8×125×2.5,
  =8×125×(4×2.5),
  =1000×10,
  =10000;
  94÷(6.84×8.5-31.46÷0.55),
  =94÷(58.14-57.2),
  =94÷0.94,
  =100.
  13÷0.4÷2.5,
  =13÷(0.4×2.5),
  =13÷1,
  =13;
  1.25×2.5×0.8,
  =(1.25×0.8)×2.5,
  =1×2.5,
  =2.5;
  1.5×101-1.5,
  =1.5×(101-1),
  =1.5×100,
  =150;
  4.8×101,
  =4.8×100+4.8×1,
  =480+4.8,
  =484.8.
  3.25×4.7-7.8,
  =15.275-7.8,
  =7.475;
  0.57+0.43×0.24,
  =0.57+0.1032,
  =0.6732.
  945÷5÷3,
  =189÷3,
  =63;
  152×3÷2,
  =456÷2,
  =228;
  43×12×6,
  =516×6,
  =3096.
  200+25×33,
  =200+825,
  =1025;
  (25+26)×48,
  =51×48,
  =2448.
  576-(290+107),
  =576-397,
  =179;
  649+124-556,
  =773-556,
  =217.
  4.82-5.2÷0.8×0.6,
  =4.82-6.5×0.6,
  =4.82-3.9,
  =0.92.
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