《2025年天天练口算六年级数学上册人教版》

用简便方法计算
$15×\left(1+\frac{1}{5}\right)$
$\frac{5}{6}×\frac{7}{8}+\frac{1}{6}×\frac{7}{8}$
$3.3×\frac{4}{5}×\frac{5}{6}$
$100×\frac{2}{3}-100×\frac{1}{6}$
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答案： 15×(1+$\frac{1}{5}$)
=15×1+15×$\frac{1}{5}$
=15+3
=18
$\frac{5}{6}×\frac{7}{8}+\frac{1}{6}×\frac{7}{8}$
=$\frac{7}{8}×(\frac{5}{6}+\frac{1}{6})$
=$\frac{7}{8}×1$
=$\frac{7}{8}$
3.3×$\frac{4}{5}×\frac{5}{6}$
=3.3×($\frac{4}{5}×\frac{5}{6}$)
=3.3×$\frac{2}{3}$
=2.2
100×$\frac{2}{3}-100×\frac{1}{6}$
=100×($\frac{2}{3}-\frac{1}{6}$)
=100×$\frac{1}{2}$
=50

$\frac{4}{5}+\frac{4}{5}=$$\frac{8}{5}$
$\frac{7}{8}×16=$14
$3600×\frac{11}{12}×\frac{6}{22}=$900
$\frac{16}{15}×\frac{5}{8}=$$\frac{2}{3}$
$\frac{24}{35}×\frac{5}{6}=$$\frac{4}{7}$
$\frac{5}{24}×\frac{6}{25}×0=$0
$\frac{9}{10}×0.25=$$\frac{9}{40}$
$\frac{11}{12}×2.4=$2.2
$\frac{3}{14}×7×\frac{1}{3}=$$\frac{1}{2}$
$\frac{3}{4}×0.75=$$\frac{9}{16}$
$\frac{3}{25}+\frac{5}{5}=$$\frac{28}{25}$
$\frac{4}{15}×8×\frac{3}{8}=$$\frac{4}{5}$
$\frac{24}{35}×\frac{7}{8}=$$\frac{3}{5}$
$\frac{9}{28}×\frac{7}{81}=$$\frac{1}{36}$
$\frac{2}{15}×\frac{5}{6}×\frac{8}{15}=$$\frac{8}{135}$
$42×\frac{6}{7}=$36
$3.6×\frac{9}{16}=$$\frac{81}{40}$
$\frac{6}{13}×\frac{5}{9}×\frac{7}{10}=$$\frac{7}{39}$

答案： $\frac{4}{5}+\frac{4}{5}=\frac{8}{5}$
$\frac{7}{8}×16=14$
$3600×\frac{11}{12}×\frac{6}{22}=900$
$\frac{16}{15}×\frac{5}{8}=\frac{2}{3}$
$\frac{24}{35}×\frac{5}{6}=\frac{4}{7}$
$\frac{5}{24}×\frac{6}{25}×0=0$
$\frac{9}{10}×0.25=\frac{9}{40}$
$\frac{11}{12}×2.4=2.2$
$\frac{3}{14}×7×\frac{1}{3}=\frac{1}{2}$
$\frac{3}{4}×0.75=\frac{9}{16}$
$\frac{3}{25}+\frac{5}{5}=\frac{28}{25}$
$\frac{4}{15}×8×\frac{3}{8}=\frac{4}{5}$
$\frac{24}{35}×\frac{7}{8}=\frac{3}{5}$
$\frac{9}{28}×\frac{7}{81}=\frac{1}{36}$
$\frac{2}{15}×\frac{5}{6}×\frac{8}{15}=\frac{8}{135}$
$42×\frac{6}{7}=36$
$3.6×\frac{9}{16}=\frac{81}{40}$
$\frac{6}{13}×\frac{5}{9}×\frac{7}{10}=\frac{7}{39}$