一、直接写出得数。(共32分)
0.42÷6=
3.2×0.3=
6.2÷0.2=
4.8÷0.2×0.5=
0.32÷0.8=
1.01×0.9=
256−33=
1−1÷10=
1÷0.05=
4×0.05=
6.8×10=
0.4+0.6÷0.2=
0.7×0.8=
3.27+6.3=
0.44÷0.4=
4×2.5÷2.5=
$\frac{11}{12} ÷ \frac{5}{6} =$
$\frac{7}{10} × \frac{5}{21} =$
$\frac{1}{3} × 39 =$
$6 × ( \frac{1}{4} - \frac{1}{6} ) =$
$\frac{16}{17} × \frac{51}{32} =$
$\frac{9}{10} × \frac{100}{81} =$
$\frac{8}{15} × \frac{3}{2} =$
$( \frac{3}{5} + \frac{1}{3} ) ÷ \frac{8}{9} =$
$\frac{2}{3} × 99 =$
$\frac{1}{3} + 0.1 =$
$\frac{14}{55} ÷ \frac{7}{11} =$
$\frac{1}{10} ÷ \frac{1}{5} × \frac{2}{5} =$
$\frac{8}{9} × 45 =$
$\frac{3}{5} ÷ 0.15 =$
$0.25 × \frac{2}{5} =$
$\frac{5}{6} × (1 - 0.375) =$
0.42÷6=
3.2×0.3=
6.2÷0.2=
4.8÷0.2×0.5=
0.32÷0.8=
1.01×0.9=
256−33=
1−1÷10=
1÷0.05=
4×0.05=
6.8×10=
0.4+0.6÷0.2=
0.7×0.8=
3.27+6.3=
0.44÷0.4=
4×2.5÷2.5=
$\frac{11}{12} ÷ \frac{5}{6} =$
$\frac{7}{10} × \frac{5}{21} =$
$\frac{1}{3} × 39 =$
$6 × ( \frac{1}{4} - \frac{1}{6} ) =$
$\frac{16}{17} × \frac{51}{32} =$
$\frac{9}{10} × \frac{100}{81} =$
$\frac{8}{15} × \frac{3}{2} =$
$( \frac{3}{5} + \frac{1}{3} ) ÷ \frac{8}{9} =$
$\frac{2}{3} × 99 =$
$\frac{1}{3} + 0.1 =$
$\frac{14}{55} ÷ \frac{7}{11} =$
$\frac{1}{10} ÷ \frac{1}{5} × \frac{2}{5} =$
$\frac{8}{9} × 45 =$
$\frac{3}{5} ÷ 0.15 =$
$0.25 × \frac{2}{5} =$
$\frac{5}{6} × (1 - 0.375) =$
答案
0.07、0.96、31、12、0.4、0.909、223、0.9、20、0.2、68、3.4、0.56、9.57、1.1、4、$\frac{11}{10}$、$\frac{1}{6}$、13、$\frac{1}{2}$、$\frac{3}{2}$、$\frac{10}{9}$、$\frac{4}{5}$、$\frac{21}{20}$、66、$\frac{13}{30}$、$\frac{2}{5}$、$\frac{1}{5}$、40、4、0.1、$\frac{25}{48}$
二、用竖式计算,带☆的要验算。(共20分)
☆172.8÷5.4=
0.13÷0.17≈
4.08×3.5≈
(得数保留两位小数)
(得数保留一位小数)
0.67×3.8=
23.8×5.4=
☆6.21÷0.03=
☆172.8÷5.4=
0.13÷0.17≈
4.08×3.5≈
(得数保留两位小数)
(得数保留一位小数)
0.67×3.8=
23.8×5.4=
☆6.21÷0.03=
答案
32、0.76、14.3、2.546、128.52、207,竖式及验算略
三、计算下面各题,怎样算简便就怎样算。(共24分)
$2.4×1.5 + 3.6÷1.5$
$(70.82 - 64.07)÷1.5 + 6.8$
$13.5 + (70.5 + 24.5)÷0.5$
$(\frac{7}{10} + \frac{4}{5} - \frac{3}{8})÷\frac{1}{40}$
$\frac{3}{4}÷88 + 0.25×\frac{1}{88}$
$\frac{13}{16}÷\frac{4}{3} + 0.75×\frac{13}{16}$
$2.4×1.5 + 3.6÷1.5$
$(70.82 - 64.07)÷1.5 + 6.8$
$13.5 + (70.5 + 24.5)÷0.5$
$(\frac{7}{10} + \frac{4}{5} - \frac{3}{8})÷\frac{1}{40}$
$\frac{3}{4}÷88 + 0.25×\frac{1}{88}$
$\frac{13}{16}÷\frac{4}{3} + 0.75×\frac{13}{16}$
答案
6、11.3、203.5、45、$\frac{1}{88}$、$\frac{39}{32}$
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