《2025年直击考点冲刺100分六年级数学上册苏教版》

1.直接写出得数。(5分)
$\frac{5}{9} × 15 =$ $\frac{2}{5} × \frac{15}{4} =$ $\frac{3}{4} - \frac{7}{12} =$ $\frac{2}{5} × \frac{2}{3} =$
$14 - \frac{5}{7} - \frac{2}{7} =$ $\frac{16}{13} × \frac{5}{26} =$ $\frac{1}{9} + \frac{3}{7} =$ $\frac{2}{5} × 0.4 =$
$\frac{1}{20} × \frac{2}{3} =$ $(\frac{1}{8} + \frac{4}{9}) × 72 =$

答案： 1. $\frac{25}{3}$ $\frac{3}{2}$ $\frac{1}{6}$ $\frac{4}{15}$ 13 $\frac{40}{169}$ $\frac{34}{63}$ $\frac{4}{25}$ $\frac{1}{30}$ 41

2.计算下面各题,能简算的要简算。(18分)
$\frac{8}{9} × \frac{2}{5} + \frac{3}{5} ÷ \frac{9}{8}$ $(1 - \frac{2}{3} × \frac{3}{5}) × \frac{5}{6}$
$(\frac{1}{3} + \frac{1}{4} + \frac{1}{12}) × 24$ $\frac{9}{10} ÷ [\frac{1}{2} × (\frac{6}{5} - \frac{3}{10})]$
$\frac{8}{13} ÷ 7 + \frac{1}{7} × \frac{5}{13}$ $\frac{8}{9} ÷ [(\frac{2}{5} + \frac{1}{10}) × \frac{4}{3}]$

答案： 2. 原式$= \frac{8}{9} × \frac{2}{5} + \frac{3}{5} × \frac{8}{9} = \frac{8}{9} × (\frac{2}{5} + \frac{3}{5}) = \frac{8}{9} × 1 = \frac{8}{9}$ 原式$= \frac{1}{3} × 24 + \frac{1}{4} × 24 + \frac{1}{12} × 24 = 8 + 6 + 2 = 16$ 原式$= \frac{8}{13} × \frac{1}{7} + \frac{1}{7} × \frac{5}{13} = \frac{1}{7} × (\frac{8}{13} + \frac{5}{13}) = \frac{1}{7} × 1 = \frac{1}{7}$