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① 将下面的假分数转化成整数或带分数。(每题1分,共12分)
$\frac{16}{3}=$
$\frac{23}{9}=$
$\frac{38}{19}=$
$\frac{15}{2}=$
$\frac{46}{15}=$
$\frac{58}{13}=$
$\frac{69}{23}=$
$\frac{27}{3}=$
$\frac{100}{7}=$
$\frac{95}{8}=$
$\frac{51}{11}=$
$\frac{103}{31}=$
$\frac{16}{3}=$
$\frac{23}{9}=$
$\frac{38}{19}=$
$\frac{15}{2}=$
$\frac{46}{15}=$
$\frac{58}{13}=$
$\frac{69}{23}=$
$\frac{27}{3}=$
$\frac{100}{7}=$
$\frac{95}{8}=$
$\frac{51}{11}=$
$\frac{103}{31}=$
答案
1.$5\frac{1}{3}$ $2\frac{5}{9}$ $2$ $7\frac{1}{2}$
$3\frac{1}{15}$ $4\frac{6}{13}$ $3$ $9$
$14\frac{2}{7}$ $11\frac{7}{8}$ $4\frac{7}{11}$ $3\frac{10}{31}$
$3\frac{1}{15}$ $4\frac{6}{13}$ $3$ $9$
$14\frac{2}{7}$ $11\frac{7}{8}$ $4\frac{7}{11}$ $3\frac{10}{31}$
② 将下面的带分数转化成假分数。(每题1分,共8分)
$6\frac{2}{3}=$
$11\frac{1}{2}=$
$3\frac{14}{17}=$
$8\frac{4}{9}=$
$7\frac{3}{23}=$
$20\frac{1}{3}=$
$3\frac{5}{7}=$
$7\frac{7}{8}=$
$6\frac{2}{3}=$
$11\frac{1}{2}=$
$3\frac{14}{17}=$
$8\frac{4}{9}=$
$7\frac{3}{23}=$
$20\frac{1}{3}=$
$3\frac{5}{7}=$
$7\frac{7}{8}=$
答案
2.$\frac{20}{3}$ $\frac{23}{2}$ $\frac{65}{17}$ $\frac{76}{9}$
$\frac{164}{23}$ $\frac{61}{3}$ $\frac{26}{7}$ $\frac{63}{8}$
$\frac{164}{23}$ $\frac{61}{3}$ $\frac{26}{7}$ $\frac{63}{8}$
③ 计算。(每题3分,共18分)
$6.5×0.8×4.9$
$7.5×9.9+0.75$
$48.2×61.2+38.8×48.2$
$0.48×20.2-4.2$
$50.4÷[(5.5-3.25)×0.8]$
$4.27×0.83+57.3×0.083$
$6.5×0.8×4.9$
$7.5×9.9+0.75$
$48.2×61.2+38.8×48.2$
$0.48×20.2-4.2$
$50.4÷[(5.5-3.25)×0.8]$
$4.27×0.83+57.3×0.083$
答案
3.25.48 75 4820
5.496 28 8.3
5.496 28 8.3
④ 解方程。(每题4分,共12分)
$9.6x - 4.6x = 20.5$
$3.5x - 7 = 10.5$
$5.06x + 0.94x = 1.8$
$9.6x - 4.6x = 20.5$
$3.5x - 7 = 10.5$
$5.06x + 0.94x = 1.8$
答案
4.解:$x=4.1$ 解:$x=5$ 解:$x=0.3$
