题目
直接写出得数。(建议3分钟完成)-|||-.8div 2% =-|||-% +28% =-|||-div 25% =-|||-dfrac (16)(45)div dfrac (4)(9)=-|||-dfrac (4)(5)-dfrac (11)(20)=-|||-dfrac (8)(11)times dfrac (33)(40)=-|||-times 60% =-|||-.5% +dfrac (3)(8)=-|||-https:/img.cdnjtzy.com/zyb_3c8b2437cc9c9c1e498726b85839fc17.jpg-87.5% =-|||-+dfrac (5)(6)=-|||-https:/img.cdnjtzy.com/zyb_3c8b2437cc9c9c1e498726b85839fc17.jpg+48% =-|||-times 20% =-|||-dfrac (8)(55)div dfrac (4)(5)=-|||-% div 3.1% =-|||-dfrac (27)(50)div 54% =-|||-% -47% =-|||--dfrac (5)(8)=-|||-div dfrac (5)(9)=
题目解答
答案
解析
步骤 1：计算 $3.8\div 2\%$
$3.8\div 2\% = 3.8\div 0.02 = 190$
步骤 2：计算 $37\% +28\%$
$37\% +28\% = 0.37 + 0.28 = 0.65$
步骤 3：计算 $70\div 25\%$
$70\div 25\% = 70\div 0.25 = 280$
步骤 4：计算 $\dfrac {16}{45}\div \dfrac {4}{9}$
$\dfrac {16}{45}\div \dfrac {4}{9} = \dfrac {16}{45}\times \dfrac {9}{4} = \dfrac {4}{5}$
步骤 5：计算 $\dfrac {4}{5}-\dfrac {11}{20}$
$\dfrac {4}{5}-\dfrac {11}{20} = \dfrac {16}{20}-\dfrac {11}{20} = \dfrac {5}{20} = \dfrac {1}{4}$
步骤 6：计算 $\dfrac {8}{11}\times \dfrac {33}{40}$
$\dfrac {8}{11}\times \dfrac {33}{40} = \dfrac {2}{11}\times \dfrac {33}{10} = \dfrac {3}{5}$
步骤 7：计算 $120\times 60\%$
$120\times 60\% = 120\times 0.6 = 72$
步骤 8：计算 $62.5\% +\dfrac {3}{8}$
$62.5\% +\dfrac {3}{8} = 0.625 + 0.375 = 1$
步骤 9：计算 $1-87.5\%$
$1-87.5\% = 1-0.875 = 0.125$
步骤 10：计算 $6+\dfrac {5}{6}$
$6+\dfrac {5}{6} = 6\dfrac {5}{6}$
步骤 11：计算 $1+48\%$
$1+48\% = 1+0.48 = 1.48$
步骤 12：计算 $42\times 20\%$
$42\times 20\% = 42\times 0.2 = 8.4$
步骤 13：计算 $\dfrac {8}{55}\div \dfrac {4}{5}$
$\dfrac {8}{55}\div \dfrac {4}{5} = \dfrac {8}{55}\times \dfrac {5}{4} = \dfrac {2}{11}$
步骤 14：计算 $93\% \div 3.1\%$
$93\% \div 3.1\% = 0.93\div 0.031 = 30$
步骤 15：计算 $\dfrac {27}{50}\div 54\%$
$\dfrac {27}{50}\div 54\% = \dfrac {27}{50}\div 0.54 = 0.45$
步骤 16：计算 $92\% -47\%$
$92\% -47\% = 0.92 - 0.47 = 0.45$
步骤 17：计算 $4-\dfrac {5}{8}$
$4-\dfrac {5}{8} = 3\dfrac {3}{8}$
步骤 18：计算 $15\div \dfrac {5}{9}$
$15\div \dfrac {5}{9} = 15\times \dfrac {9}{5} = 27$
$3.8\div 2\% = 3.8\div 0.02 = 190$
步骤 2：计算 $37\% +28\%$
$37\% +28\% = 0.37 + 0.28 = 0.65$
步骤 3：计算 $70\div 25\%$
$70\div 25\% = 70\div 0.25 = 280$
步骤 4：计算 $\dfrac {16}{45}\div \dfrac {4}{9}$
$\dfrac {16}{45}\div \dfrac {4}{9} = \dfrac {16}{45}\times \dfrac {9}{4} = \dfrac {4}{5}$
步骤 5：计算 $\dfrac {4}{5}-\dfrac {11}{20}$
$\dfrac {4}{5}-\dfrac {11}{20} = \dfrac {16}{20}-\dfrac {11}{20} = \dfrac {5}{20} = \dfrac {1}{4}$
步骤 6：计算 $\dfrac {8}{11}\times \dfrac {33}{40}$
$\dfrac {8}{11}\times \dfrac {33}{40} = \dfrac {2}{11}\times \dfrac {33}{10} = \dfrac {3}{5}$
步骤 7：计算 $120\times 60\%$
$120\times 60\% = 120\times 0.6 = 72$
步骤 8：计算 $62.5\% +\dfrac {3}{8}$
$62.5\% +\dfrac {3}{8} = 0.625 + 0.375 = 1$
步骤 9：计算 $1-87.5\%$
$1-87.5\% = 1-0.875 = 0.125$
步骤 10：计算 $6+\dfrac {5}{6}$
$6+\dfrac {5}{6} = 6\dfrac {5}{6}$
步骤 11：计算 $1+48\%$
$1+48\% = 1+0.48 = 1.48$
步骤 12：计算 $42\times 20\%$
$42\times 20\% = 42\times 0.2 = 8.4$
步骤 13：计算 $\dfrac {8}{55}\div \dfrac {4}{5}$
$\dfrac {8}{55}\div \dfrac {4}{5} = \dfrac {8}{55}\times \dfrac {5}{4} = \dfrac {2}{11}$
步骤 14：计算 $93\% \div 3.1\%$
$93\% \div 3.1\% = 0.93\div 0.031 = 30$
步骤 15：计算 $\dfrac {27}{50}\div 54\%$
$\dfrac {27}{50}\div 54\% = \dfrac {27}{50}\div 0.54 = 0.45$
步骤 16：计算 $92\% -47\%$
$92\% -47\% = 0.92 - 0.47 = 0.45$
步骤 17：计算 $4-\dfrac {5}{8}$
$4-\dfrac {5}{8} = 3\dfrac {3}{8}$
步骤 18：计算 $15\div \dfrac {5}{9}$
$15\div \dfrac {5}{9} = 15\times \dfrac {9}{5} = 27$