.小学数学简便运算专项练习400题第一部分(1-50题)12.06＋5.07＋2.9430.34＋9.76－10.3433×3÷×325×7×488234÷4÷1.71.25÷×0.83343102×7.3÷5.117+-771775752231－－11+7+39139355933-15.7-4.341.06－19.72－20.282334557－3+8+2-588799700÷14÷518.6÷2.5÷0.4..1.96÷0.5÷41.06×2.5×41717131313×19÷1929÷27×2719.68－（2.68＋2.97）5.68＋（5.39＋4.32）25219.68－（2.97＋9.68）7+(-)171817631745-(-)0.74÷(71×)7871001.25×（8÷0.5）0.25×（4×1.2）1001.25×（213×0.8）9.3÷(4÷)9311311224×(--+)(12+)×7128637167370.92×1.41＋0.92×8.59×-×513513..991.311.61.61.311.618.4559999+999+99+94821-9983.212.5251.25887.60.253.50.1251.8991.83.89.90.38777103-2-1.019.62525251020.872.69.9712221731+7+32321733551-100..333336383737213.527+13.572+13.51.57.4+0.6150%+2315.3+2.725%0.6710.16.742821.62.8165.61.70.56831371226.62.561161258332345334.6+3+6+5.43()55157144453532.8+5+7.2+34+2.25+5+7998842536457+4+25316+165751171135344512+33+1+10.75+++0.3757979784444444459+99+999+99994(2+)555555512143155-2-148.3-15-4171766..5194.25+463.60.2564513530.6250.5++62.5%317231828138999932.5(+++)22+2575%-70.75101010104117170.2563.51362.5-244215215817443+3.125+1+116+(2-1.8)998573331(111+999)[56(-)]49.510-(50-)0.67852714547744+51+45(+0.6)11191971191531389737.5%+1040.3753(55.375)8481743.51+1.252+3.8719941053755+29968439+1001446+295888+999..2991015639992100201125-99660.2572156-5672101-150253212570999+709310.25482.5-0.42731326.6+2.5675.399+75.325314.63.7+540.370.125+8.25+12.5%48712331161154.2558331442319.826.573.434.6+3+6+5.455..3534+2.25+5+79.632.5488425258.37-3.25-(1.37+1.75)34567553553+121278878551045+18+151627996221147+52433612554441211+[+]77775351327+251124433612551557591246912125..15311(3217)25412444189799455251625161656854351131663()[()]92178234233419212199977410455131568321442