《2025年实验班计算高手四年级数学下册青岛版》

一、
4.3 + 3.26 =
3.6 × 0.05 =
2.8 ÷ 0.7 × 2.2 =
8.1 - 2.4 =
0.94 ÷ 0.2 =
7.6 - (4.3 + 0.7) =
7.2 ÷ 0.36 =
29.2 + 3.4 =
2.6 × 0.3 × 0.5 =
72 ÷ 0.8 =
64 × 0.8 =
9.7 + 5.8 - 2.5 =
4.2 × 3 =
30.6 ÷ 6 =
0.54 ÷ 0.9 - 0.3 =
144 ÷ 1.2 =
4.6 × 0.6 =
8.5 ÷ 0.5 × 0.3 =
11.4 + 3.8 =
12 ÷ 0.8 =
1.92 + (6.5 + 3.5) =
4.8 ÷ 0.06 =
2.63 + 3.27 =
2.6 × 0.2 × 0.1 =
10.8 ÷ 6 =
84 × 0.2 =
6.2 + 1.8 - 2.6 =
0.14 × 6 =
1.24 ÷ 0.4 =
30 ÷ 0.5 + 20 =

答案： 7.56 0.18 8.8 5.7
4.7 2.6 20 32.6
0.39 90 51.2 13
12.6 5.1 0.3 120
2.76 5.1 15.2 15
11.92 80 5.9 0.052
1.8 16.8 5.4 0.84
3.1 80

二、
$\frac{2}{11} =$ ( ) ÷ ( )
18 ÷ 37 = $\frac{(\ \ \ \ )}{(\ \ \ \ )}$
( ) ÷ 13 = $\frac{6}{13}$
$\frac{7}{(\ \ \ \ )} =$ ( ) ÷ 23
28 ÷ ( ) = $\frac{28}{41}$
$\frac{(\ \ \ \ )}{21} = 13 ÷ 21$
3 ÷ ( ) = $\frac{3}{7}$
( ) ÷ 18 = $\frac{17}{18}$
$\frac{(\ \ \ \ )}{82} = 35 ÷$ ( )
$\frac{10}{(\ \ \ \ )} = 10 ÷ 11$
19 ÷ 36 = $\frac{(\ \ \ \ )}{(\ \ \ \ )}$
$\frac{17}{81} =$ ( ) ÷ ( )
$\frac{8}{(\ \ \ \ )} = 8 ÷ 18$
1 ÷ 12 = $\frac{(\ \ \ \ )}{(\ \ \ \ )}$
$\frac{(\ \ \ \ )}{23} = 12 ÷$ ( )

答案： 2 11 $\frac{18}{37}$ 6 23 7 41 13 7
17 35 82 11 $\frac{19}{36}$ 17 81 18
$\frac{1}{12}$ 12 23

三、把一根4米长的木料平均分成5段，每段是这根木料的几分之几？每段长多少米？

答案： 1÷5=$\frac{1}{5}$ 4÷5=$\frac{4}{5}$(米)
每段是这根木料的$\frac{1}{5}$，每段长$\frac{4}{5}$米。