1. 直接写出得数。
实际用时:分钟
$5.02×3=$
$6.21÷3=$
$\frac{9}{10}÷27=$
$\frac{1}{4}-\frac{1}{4}×\frac{1}{2}=$
$240\%÷8\%=$
$6.3+2.8=$
$25\%+\frac{7}{4}=$
$7.5+2.8+2.5=$
$9.56-2.36=$
$20÷200=$
$\frac{1}{2}-\frac{2}{5}=$
$40\%×8-1.5=$
$5.5\%×100=$
$135\%-35\%=$
$\frac{8}{9}×\frac{5}{24}=$
$15×(\frac{1}{3}-\frac{1}{15})=$
$5.5+2.9=$
$25÷50\%=$
$\frac{13}{25}÷13=$
$0.36÷1.2×10=$
$8.4÷3=$
$100×0.275=$
$\frac{1}{20}+\frac{1}{2}=$
$10×15\%÷0.5=$
实际用时:分钟
$5.02×3=$
$6.21÷3=$
$\frac{9}{10}÷27=$
$\frac{1}{4}-\frac{1}{4}×\frac{1}{2}=$
$240\%÷8\%=$
$6.3+2.8=$
$25\%+\frac{7}{4}=$
$7.5+2.8+2.5=$
$9.56-2.36=$
$20÷200=$
$\frac{1}{2}-\frac{2}{5}=$
$40\%×8-1.5=$
$5.5\%×100=$
$135\%-35\%=$
$\frac{8}{9}×\frac{5}{24}=$
$15×(\frac{1}{3}-\frac{1}{15})=$
$5.5+2.9=$
$25÷50\%=$
$\frac{13}{25}÷13=$
$0.36÷1.2×10=$
$8.4÷3=$
$100×0.275=$
$\frac{1}{20}+\frac{1}{2}=$
$10×15\%÷0.5=$
答案
1. 15.06 2.07 $\frac{1}{30}$ $\frac{1}{8}$
30 9.1 2 12.8
7.2 0.1 $\frac{1}{10}$ 1.7
5.5 100% $\frac{5}{27}$ 4
8.4 50 $\frac{1}{25}$ 3
2.8 27.5 $\frac{11}{20}$ 3
30 9.1 2 12.8
7.2 0.1 $\frac{1}{10}$ 1.7
5.5 100% $\frac{5}{27}$ 4
8.4 50 $\frac{1}{25}$ 3
2.8 27.5 $\frac{11}{20}$ 3
2. 计算下面各题。
$36×(\dfrac{5}{6}+\dfrac{7}{12}-\dfrac{11}{18})$
$[1-(\dfrac{4}{7}+\dfrac{1}{3})]÷\dfrac{2}{3}$
$\dfrac{5}{8}-[(\dfrac{3}{4}+0.5)÷\dfrac{5}{2}]$
$36×(\dfrac{5}{6}+\dfrac{7}{12}-\dfrac{11}{18})$
$[1-(\dfrac{4}{7}+\dfrac{1}{3})]÷\dfrac{2}{3}$
$\dfrac{5}{8}-[(\dfrac{3}{4}+0.5)÷\dfrac{5}{2}]$
答案
2. 29 $\frac{1}{7}$ $\frac{1}{8}$
3. 在○里填上“>”“<”或“=”。
$\frac{5}{8} ÷ \frac{4}{5} ◯ \frac{5}{8} × \frac{4}{5}$
$\frac{4}{9} × \frac{3}{5} ◯ \frac{4}{9} ÷ \frac{5}{3}$
$\frac{8}{9} ÷ \frac{8}{3} ◯ \frac{8}{9} × \frac{8}{3}$
$\frac{15}{8} × \frac{4}{3} ◯ \frac{15}{8} ÷ \frac{4}{3}$
$\frac{2}{13} × \frac{1}{2} ◯ \frac{2}{13} ÷ \frac{1}{2}$
$\frac{4}{11} ÷ 2 ◯ \frac{4}{11} × 2$
$\frac{5}{8} ÷ \frac{4}{5} ◯ \frac{5}{8} × \frac{4}{5}$
$\frac{4}{9} × \frac{3}{5} ◯ \frac{4}{9} ÷ \frac{5}{3}$
$\frac{8}{9} ÷ \frac{8}{3} ◯ \frac{8}{9} × \frac{8}{3}$
$\frac{15}{8} × \frac{4}{3} ◯ \frac{15}{8} ÷ \frac{4}{3}$
$\frac{2}{13} × \frac{1}{2} ◯ \frac{2}{13} ÷ \frac{1}{2}$
$\frac{4}{11} ÷ 2 ◯ \frac{4}{11} × 2$
答案
3. > = <
> < <
> < <
计算:$\frac{1}{1×2}+\frac{1}{2×3}+\frac{1}{3×4}+…+\frac{1}{2026×2027}$
答案
【思维提升】$\frac{2026}{2027}$
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