《2025年速算天地数学口算心算六年级上册苏教版》

速算 1
$\frac{2}{9}+\frac{5}{9}=$$\frac{7}{9}$　　$\frac{2}{3}×\frac{2}{3}=$$\frac{4}{9}$
$1-\frac{6}{7}=$$\frac{1}{7}$　　$\frac{1}{4}×\frac{1}{3}=$$\frac{1}{12}$
$\frac{3}{5}+\frac{1}{5}=$$\frac{4}{5}$　　$\frac{5}{6}÷\frac{2}{5}=$$\frac{25}{12}$
$\frac{7}{10}-\frac{3}{10}=$$\frac{2}{5}$　　$\frac{3}{8}+\frac{1}{2}=$$\frac{7}{8}$
$\frac{7}{6}+\frac{5}{3}=$$\frac{17}{6}$　　$\frac{1}{2}×\frac{2}{5}=$$\frac{1}{5}$
$\frac{1}{2}-\frac{1}{3}=$$\frac{1}{6}$　　$\frac{5}{6}×12=$10
$\frac{1}{2}-\frac{3}{10}=$$\frac{1}{5}$　　$\frac{5}{9}÷1=$$\frac{5}{9}$
$\frac{1}{2}÷\frac{1}{2}=$1　　$\frac{6}{7}×\frac{6}{5}=$$\frac{36}{35}$
$18×\frac{1}{3}=$6　　$28×\frac{1}{2}=$14
$\frac{1}{4}×3=$$\frac{3}{4}$　　$\frac{6}{7}×14=$12

答案： $\frac{7}{9}$；$\frac{4}{9}$；$\frac{1}{7}$；$\frac{1}{12}$；$\frac{4}{5}$；$\frac{25}{12}$；$\frac{2}{5}$；$\frac{7}{8}$；$\frac{17}{6}$；$\frac{1}{5}$；$\frac{1}{6}$；10；$\frac{1}{5}$；$\frac{5}{9}$；1；$\frac{36}{35}$；6；14；$\frac{3}{4}$；12