1. 直接写出得数。
实际用时：分钟
$35\% - 12\% =$
$70÷10\% =$
$42\%×40 =$
$81\%÷9 =$
$22\% + 46\% =$
$62\%×200 =$
$76\% - 24\% =$
$49\%÷70 =$
$58\% + 42\% =$
$35×20 =$
$0.01×0.5 =$
$4.8÷0.4 =$
$828÷4 =$
$200×25\% =$
$22\%÷11\% =$
$115 + 356 =$
$150:75 =$
$4.5:2.5 =$
$\frac{3}{4}:\frac{3}{7} =$
$\frac{3}{5}:0.2 =$
$\frac{5}{11} + \frac{1}{11} =$
$\frac{1}{2} - \frac{1}{9} =$
$\frac{5}{11}×66\% =$
$\frac{2}{15}÷4 =$
$\frac{1}{5} + \frac{1}{5} =$
$\frac{4}{5} - \frac{3}{8} =$
$\frac{9}{25}×\frac{5}{27} =$
$2\frac{1}{2}÷250\% =$
$\frac{7}{10} + \frac{3}{10}×2 =$
$65\% + 120\% + 35\% =$
$\frac{8}{7} - \frac{4}{5} - \frac{1}{5} =$
$(15\% + 45\%)×50 =$

1. $23\%$ $700$ $16.8$ $9\%$
$68\%$ $124$ $52\%$ $0.7\%$
$100\%$ $700$ $0.005$ $12$
$207$ $50$ $2$ $471$
$2$ $1.8$ $\frac{7}{4}$ $3$
$\frac{6}{11}$ $\frac{7}{18}$ $\frac{3}{10}$ $\frac{1}{30}$
$\frac{2}{5}$ $\frac{17}{40}$ $\frac{1}{15}$ $1$
$\frac{13}{10}$ $220\%$ $\frac{1}{7}$ $30$

2. 计算下面各题。
$\frac{7}{12} × ( \frac{5}{7} - \frac{1}{2} )$
$72 × 75\% + 28 ÷ \frac{4}{3}$
$25 × 75\% + 23 × \frac{3}{4}$

2. $\frac{1}{8}$ $75$ $36$

3. 求涂色部分的面积。

3. $235.5\ \mathrm{dm}^2$ $39.25\ \mathrm{cm}^2$

计算:$\frac{1}{2026}+\frac{2}{2026}+\frac{3}{2026}+\dots+\frac{2024}{2026}+\frac{2025}{2026}$

$\frac{2025}{2}$