1 改写(把下面各数改写成百分数)
建议用时3分钟 评价:☆☆☆
0.77=
0.714=
1.28=
1.021=
0.56=
0.558=
2.71=
0.823=
5=
0.09=
123=
4.75=
$\frac{3}{5}=$
$\frac{3}{4}=$
$\frac{1}{2}=$
$\frac{4}{5}=$
$\frac{7}{10}=$
$\frac{7}{8}=$
$\frac{3}{20}=$
$\frac{1}{50}=$
$\frac{3}{25}=$
$\frac{1}{80}=$
$\frac{1}{125}=$
$\frac{5}{8}=$
建议用时3分钟 评价:☆☆☆
0.77=
0.714=
1.28=
1.021=
0.56=
0.558=
2.71=
0.823=
5=
0.09=
123=
4.75=
$\frac{3}{5}=$
$\frac{3}{4}=$
$\frac{1}{2}=$
$\frac{4}{5}=$
$\frac{7}{10}=$
$\frac{7}{8}=$
$\frac{3}{20}=$
$\frac{1}{50}=$
$\frac{3}{25}=$
$\frac{1}{80}=$
$\frac{1}{125}=$
$\frac{5}{8}=$
答案
1. 77% 71.4% 128% 102.1% 56% 55.8% 271% 82.3% 500% 9% 12300% 475% 60% 75% 50% 80% 70% 87.5% 15% 2% 12% 1.25% 0.8% 62.5%
2 脱式计算(能简算的要简算)
建议用时4分钟 评价:☆☆☆
$\frac{4}{51} × \frac{3}{7} × \frac{17}{18}$
$(\frac{1}{12} + \frac{7}{18} + \frac{5}{24}) × 36$
$(\frac{3}{5} + 0.7) ÷ \frac{13}{10} - \frac{3}{10}$
$(\frac{5}{6} - \frac{3}{4}) ÷ \frac{5}{12} × \frac{5}{9}$
$\frac{1}{7} × \frac{5}{13} + \frac{9}{13} × \frac{1}{7}$
$\frac{7}{9} × \frac{3}{10} - \frac{3}{10} × \frac{4}{9}$
建议用时4分钟 评价:☆☆☆
$\frac{4}{51} × \frac{3}{7} × \frac{17}{18}$
$(\frac{1}{12} + \frac{7}{18} + \frac{5}{24}) × 36$
$(\frac{3}{5} + 0.7) ÷ \frac{13}{10} - \frac{3}{10}$
$(\frac{5}{6} - \frac{3}{4}) ÷ \frac{5}{12} × \frac{5}{9}$
$\frac{1}{7} × \frac{5}{13} + \frac{9}{13} × \frac{1}{7}$
$\frac{7}{9} × \frac{3}{10} - \frac{3}{10} × \frac{4}{9}$
答案
2. $\frac{2}{63}$ $24\frac{1}{2}$ $\frac{7}{10}$ $\frac{1}{9}$ $\frac{2}{13}$ $\frac{1}{10}$
如图,涂色部分的面积占整个图形的(
30
)%。答案
3. 30
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