《2025年口算题卡河北少年儿童出版社五年级数学下册苏教版》

用简便方法计算下列各题。
①$\frac{1}{4}+\frac{1}{7}+\frac{3}{4}=$
②$\frac{4}{9}+\frac{5}{7}+\frac{5}{9}=$
③$2-\frac{3}{5}-\frac{2}{5}=$
④$\frac{5}{8}+\frac{1}{2}-\frac{1}{4}=$
⑤$\frac{5}{8}+\frac{3}{7}+\frac{3}{8}=$
⑥$\frac{5}{6}+\frac{2}{5}+\frac{1}{6}+\frac{2}{5}=$
⑦$\frac{4}{5}+\frac{3}{7}+\frac{1}{5}+\frac{4}{7}=$
⑧$\frac{1}{10}+\frac{4}{9}+\frac{9}{10}+\frac{5}{9}=$
⑨$\frac{4}{7}+\frac{1}{2}+\frac{1}{14}=$
⑩$\frac{5}{14}+\frac{5}{6}+\frac{1}{6}=$
⑪$\frac{1}{2}+\frac{4}{7}+\frac{13}{14}=$
⑫$\frac{1}{3}+\frac{3}{10}+\frac{2}{3}=$
⑬$\frac{1}{4}+\frac{3}{5}+\frac{1}{5}+\frac{3}{4}=$
⑭$\frac{1}{5}+\frac{4}{21}+\frac{4}{5}=$
⑮$\frac{1}{3}+\frac{5}{7}+\frac{2}{21}=$
⑯$\frac{5}{8}+\frac{2}{7}+\frac{3}{8}=$
⑰$\frac{5}{7}+\frac{5}{8}+\frac{2}{7}+\frac{3}{8}=$
⑱$\frac{1}{2}+\frac{1}{4}+\frac{1}{2}+\frac{3}{4}=$
⑲$\frac{1}{2}+\frac{1}{3}+\frac{1}{12}=$
⑳$\frac{5}{6}+\frac{3}{4}-\frac{5}{12}=$

答案：