《2025年通城学典计算能手四年级数学下册青岛版》

一、口算。
0.25×30 = 91÷13 = 8.1 + 9 =
5.5÷11 = 2.5 - 1.37 = 1.8÷0.45 =
1.2×0.9 = 20÷0.4 = 3.41 - 3.14 =
0.42÷0.6 = 0.21×300 = 400×0.06 =
0.91÷0.7 = 8.01 + 0.19 = 0.5÷2.5 =
0.808 - 0.8 = 0.81÷2.7 = 100×0.053 =
4.9÷0.49 = 3.9×0.5 = 3.5÷0.05 =
0.8×0.1 = 0.048 + 0.52 = 0.36×4 =
8.3 - 3 = 3÷0.25 = 4.8÷0.12 =
0.3 + 0.12 = 2.4×0.5 = 1.9×30 =

答案： 7.5 7 17.1
0.5 1.13 4
1.08 50 0.27
0.7 63 24
1.3 8.2 0.2
0.008 0.3 5.3
10 1.95 70
0.08 0.568 1.44
5.3 12 40
0.42 1.2 57

#### 二、连一连。

答案：