2025年文墨小学数学口算心算天天练五年级下册人教版


注:目前有些书本章节名称可能整理的还不是很完善,但都是按照顺序排列的,请同学们按照顺序仔细查找。练习册 2025年文墨小学数学口算心算天天练五年级下册人教版 答案主要是用来给同学们做完题方便对答案用的,请勿直接抄袭。



《2025年文墨小学数学口算心算天天练五年级下册人教版》

① $\frac{4}{5}$÷$\frac{3}{4}$○$\frac{7}{10}$×$\frac{5}{14}$
答案:
左边:$\frac{4}{5}÷\frac{3}{4}=\frac{4}{5}×\frac{4}{3}=\frac{16}{15}\approx1.067$,右边:$\frac{7}{10}×\frac{5}{14}=\frac{1}{4}=0.25$,$\frac{16}{15}>0.25$
② $\frac{2}{5}$×$\frac{15}{28}$○$\frac{1}{2}$×$\frac{3}{5}$
答案:
左边:$\frac{2}{5}×\frac{15}{28}=\frac{3}{14}\approx0.214$,右边:$\frac{1}{2}×\frac{3}{5}=\frac{3}{10}=0.3$,$\frac{3}{14}<0.3$
③ $\frac{1}{2}$×$\frac{3}{10}$○$\frac{4}{5}$÷$\frac{3}{5}$
答案:
左边:$\frac{1}{2}×\frac{3}{10}=\frac{3}{20}=0.15$,右边:$\frac{4}{5}÷\frac{3}{5}=\frac{4}{3}\approx1.333$,$0.15<\frac{4}{3}$
④ $\frac{3}{4}$×$\frac{3}{4}$○$\frac{4}{5}$÷$\frac{4}{5}$
答案:
左边:$\frac{3}{4}×\frac{3}{4}=\frac{9}{16}=0.5625$,右边:$\frac{4}{5}÷\frac{4}{5}=1$,$0.5625<1$
⑤ 1÷$\frac{11}{15}$○$\frac{7}{10}$÷$\frac{1}{5}$
答案:
左边:$1÷\frac{11}{15}=\frac{15}{11}\approx1.36$,右边:$\frac{7}{10}÷\frac{1}{5}=\frac{7}{2}=3.5$,$\frac{15}{11}<3.5$
⑥ $\frac{3}{4}$÷$\frac{1}{6}$○$\frac{3}{4}$×$\frac{1}{4}$
答案:
左边:$\frac{3}{4}÷\frac{1}{6}=\frac{3}{4}×6=\frac{9}{2}=4.5$,右边:$\frac{3}{4}×\frac{1}{4}=\frac{3}{16}=0.1875$,$4.5>0.1875$
⑦ 1÷$\frac{1}{8}$○$\frac{1}{2}$÷$\frac{1}{2}$
答案:
左边:$1÷\frac{1}{8}=8$,右边:$\frac{1}{2}÷\frac{1}{2}=1$,$8>1$
⑧ $\frac{1}{4}$×$\frac{1}{5}$○$\frac{5}{6}$×$\frac{7}{12}$
答案:
左边:$\frac{1}{4}×\frac{1}{5}=\frac{1}{20}=0.05$,右边:$\frac{5}{6}×\frac{7}{12}=\frac{35}{72}\approx0.486$,$0.05<0.486$
⑨ $\frac{3}{7}$×$\frac{4}{7}$○7÷$\frac{1}{3}$
答案:
左边:$\frac{3}{7}×\frac{4}{7}=\frac{12}{49}\approx0.245$,右边:$7÷\frac{1}{3}=21$,$0.245<21$
⑩ $\frac{5}{6}$×$\frac{7}{12}$○$\frac{3}{5}$÷$\frac{1}{4}$
答案:
左边:$\frac{5}{6}×\frac{7}{12}=\frac{35}{72}\approx0.486$,右边:$\frac{3}{5}÷\frac{1}{4}=\frac{12}{5}=2.4$,$0.486<2.4$
⑪ $\frac{3}{7}$÷$\frac{2}{3}$○$\frac{2}{3}$×$\frac{3}{4}$
答案:
左边:$\frac{3}{7}÷\frac{2}{3}=\frac{9}{14}\approx0.64$,右边:$\frac{2}{3}×\frac{3}{4}=\frac{1}{2}=0.5$,$\frac{9}{14}>0.5$
⑫ $\frac{7}{12}$÷$\frac{1}{3}$○15÷$\frac{3}{4}$
答案:
左边:$\frac{7}{12}÷\frac{1}{3}=\frac{7}{4}=1.75$,右边:$15÷\frac{3}{4}=20$,$1.75<20$
⑬ 42÷$\frac{7}{10}$○$\frac{5}{8}$÷$\frac{7}{16}$
答案:
左边:$42÷\frac{7}{10}=60$,右边:$\frac{5}{8}÷\frac{7}{16}=\frac{10}{7}\approx1.428$,$60>\frac{10}{7}$
⑭ 81×$\frac{7}{9}$○$\frac{2}{5}$×$\frac{1}{4}$
答案:
左边:$81×\frac{7}{9}=63$,右边:$\frac{2}{5}×\frac{1}{4}=\frac{1}{10}=0.1$,$63>0.1$
⑮ $\frac{1}{2}$÷$\frac{1}{8}$○3×$\frac{7}{9}$
答案:
左边:$\frac{1}{2}÷\frac{1}{8}=4$,右边:$3×\frac{7}{9}=\frac{7}{3}\approx2.333$,$4>\frac{7}{3}$
⑯ $\frac{7}{10}$×5○$\frac{7}{3}$÷$\frac{7}{8}$
答案:
左边:$\frac{7}{10}×5=\frac{7}{2}=3.5$,右边:$\frac{7}{3}÷\frac{7}{8}=\frac{8}{3}\approx2.666$,$3.5>\frac{8}{3}$
⑰ $\frac{7}{6}$÷$\frac{1}{2}$○$\frac{1}{4}$×$\frac{1}{5}$
答案:
左边:$\frac{7}{6}÷\frac{1}{2}=\frac{7}{3}\approx2.333$,右边:$\frac{1}{4}×\frac{1}{5}=\frac{1}{20}=0.05$,$\frac{7}{3}>0.05$
⑱ $\frac{1}{3}$÷$\frac{3}{10}$○$\frac{1}{3}$÷$\frac{6}{5}$
答案:
左边:$\frac{1}{3}÷\frac{3}{10}=\frac{10}{9}\approx1.111$,右边:$\frac{1}{3}÷\frac{6}{5}=\frac{5}{18}\approx0.277$,$\frac{10}{9}>\frac{5}{18}$
⑲ $\frac{10}{9}$×$\frac{3}{10}$○$\frac{1}{2}$×$\frac{1}{25}$
答案:
左边:$\frac{10}{9}×\frac{3}{10}=\frac{1}{3}\approx0.333$,右边:$\frac{1}{2}×\frac{1}{25}=\frac{1}{50}=0.02$,$\frac{1}{3}>0.02$
⑳ $\frac{11}{18}$÷$\frac{5}{3}$○19×$\frac{4}{19}$
答案:
左边:$\frac{11}{18}÷\frac{5}{3}=\frac{11}{30}\approx0.367$,右边:$19×\frac{4}{19}=4$,$\frac{11}{30}<4$

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