1. 直接写出得数。
实际用时：分钟
210×5=
900×10%=
$\frac{11}{5}-0.2=$
$\frac{4}{3}×\frac{1}{5}×\frac{5}{4}=$
1.5÷0.3=
16÷0.8=
$\frac{4}{3}×15=$
$\frac{9}{10}-(\frac{4}{5}-\frac{1}{10})=$
9.8-2.5=
150%÷50%=
$\frac{2}{7}+\frac{1}{5}=$
$\frac{4}{9}÷\frac{2}{3}×\frac{2}{3}=$
54-29=
175%-0.69=
$23÷\frac{1}{3}=$
$\frac{5}{7}×\frac{1}{3}÷\frac{5}{3}=$
217÷7=
90%×0.6=
$\frac{1}{10}+\frac{2}{7}=$
$\frac{4}{3}-\frac{1}{3}×\frac{1}{2}=$
5.1×5=
810÷90=
$48\%×\frac{5}{8}=$
$\frac{12}{11}÷(\frac{1}{11}×3)=$
900÷15=
1.59+31%=
$\frac{7}{8}-\frac{1}{5}=$
$6×(1-\frac{1}{6})=$
399+15=
6.8+5.5=
$\frac{9}{20}÷\frac{9}{20}=$
$\frac{4}{11}+\frac{1}{5}+\frac{7}{11}=$
140×20=
305÷5=
$\frac{7}{16}×32=$
$\frac{1}{6}÷\frac{1}{2}×12=$
400-215=
7.5×4=
$1÷\frac{3}{5}=$
$\frac{1}{15}×15-\frac{10}{11}=$

1. 1050 90 2 $\frac{1}{3}$
5 20 20 $\frac{1}{5}$
7.3 3 $\frac{17}{35}$ $\frac{4}{9}$
25 1.06 69 $\frac{1}{7}$
31 0.54 $\frac{27}{70}$ $\frac{7}{6}$
25.5 9 0.3 4
60 1.9 $\frac{27}{40}$ 5
414 12.3 1 $\frac{6}{5}$
2800 61 14 4
185 30 $\frac{5}{3}$ $\frac{1}{11}$

2. 计算下面各题。
$\frac{4}{5} × [ \frac{15}{16} ÷ ( \frac{7}{16} - \frac{1}{8} ) ]$
$180 ÷ (1 - 33\% - 7\%)$
$42 × ( \frac{1}{2} - \frac{1}{3} + \frac{5}{7} )$
$( \frac{2}{11} + \frac{3}{22} ) × 66$
$\frac{1}{4} × 12.5\% + \frac{1}{4} × \frac{7}{8}$
$\frac{9}{25} × 101 - \frac{9}{25}$

2. $\frac{12}{5}$ 300 37
21 $\frac{1}{4}$ 36