《2025年通城学典计算能手五年级数学下册青岛版五四制》

一、口算。
$\frac{2}{5}+\frac{1}{6}=$ $\frac{9}{11}×\frac{2}{3}=$ $\frac{5}{8}-\frac{1}{12}=$
$\frac{9}{20}÷\frac{3}{5}=$ 6.4÷8％ = $\frac{8}{3}×\frac{23}{24}=$
54×$\frac{4}{27}=$ 0.45×1％ = 12.56÷4 =
40÷0.4 = 0.07×0.3 = 3.14×32 =
4.95÷0.9 = 21.98÷3.14 = 0.36 + 0.4 =
$\frac{4}{5}-\frac{1}{4}=$ 0.108÷200％ = 2÷$\frac{2}{3}=$
3.14×7 = 62.8÷3.14 = 78×$\frac{2}{39}=$
0.6÷0.15 = 3.14×25 = 6×4.4 =
23 - 1.5 = $\frac{3}{8}÷\frac{9}{4}=$ 2 - 15％ =
4600 + 840 = 6.75 - 0.8 = 75％÷$\frac{1}{4}=$

答案： $\frac{17}{30}$@@$\frac{6}{11}$@@$\frac{13}{24}$@@$\frac{3}{4}$@@80@@$\frac{23}{9}$@@8@@0.0045@@3.14@@100@@0.021@@100.48@@5.5@@7@@0.76@@$\frac{11}{20}$@@0.054@@3@@21.98@@20@@4@@4@@78.5@@26.4@@21.5@@$\frac{1}{6}$@@1.85@@5440@@5.95@@3

二、解方程。
0.75x÷0.125 = 24 $x-\frac{4}{9}x = 50$ $x÷(1 - 25％) = 16$

答案： $x = 4$@@$x = 90$@@$x = 12$