《2025年通城学典计算能手四年级数学下册青岛版》

一、口算。
4.4 + 3.56 =
32×0.02 =
7.2 - 1.2 + 6.7 =
4.25÷0.05 =
0.99÷0.1 =
0.25×17.5×4 =
2.6×0.4 =
35×101 =
(8.1 - 0.1)÷0.1 =
5.6÷0.07 =
7.3 + 1.05 =
6.3÷2.5÷0.4 =
0.26×0.5 =
0.99×10 =
4×(1.5 + 0.25) =
92.5÷5 =
0.08÷0.2 =
6.5 + (7.8 + 3.5) =
0.9 - 0.65 =
0.12×0.4 =
9.63×101 - 9.63 =
14×0.3 =
9.73 + 0.37 =
1÷0.125×0.875 =
3.5÷0.7 =
0.1÷0.5 =
8.5 - 0.24 - 1.76 =
100÷0.01 =
3 - 1.4 =
(0.96 - 0.48)÷12 =

答案： 7.96 0.64 12.7
85 9.9 17.5
1.04 3535 80
80 8.35 6.3
0.13 9.9 7
18.5 0.4 17.8
0.25 0.048 963
4.2 10.1 7
5 0.2 6.5
10000 1.6 0.04

二、解方程。
0.7x + 2.3 = 3.21
x - 0.38x = 7.75
7x - 3.6×4.3 = 32.61

答案： x = 1.3 x = 12.5
x = 6.87