《2025年亮点给力计算天天练五年级数学下册苏教版》

1. 直接写出得数。
8.71÷0.01 = 8.1÷30 = 2.4C - 0.02C = 1.3×2.5×4 =
3.27 + 0.63 = 1 - 0.61 = 5.8x + 1.4x = 3.5×0.4×2 =
5×0.24 = 12.3÷3 = 4.5x×3 = 19.8 + 3.2 - 9.8 =
2.8×0.2 = 4.1×8 = 13.4n - 4.3n = 9÷0.01÷3 =
13×0.7 = 2.85 + 2.25 = 8.4x÷0.4 = 5.6 + 2.4 - 1.7 =
10 - 0.95 = 0.9÷0.45 = 3.81a - 0.9a = 15×0.6×4 =
0.96÷2 = 7.8×0.5 = 2.5n×1.6 = 4.8÷24÷2 =
3.9 + 9.3 = 3.14×2 = 6y - 0.2y = 2 - 1.08 + 0.08 =

答案： 871 0.27 2.38C 13
3.9 0.39 7.2x 2.8
1.2 4.1 13.5x 13.2
0.56 32.8 9.1n 300
9.1 5.1 21x 6.3
9.05 2 2.91a 36
0.48 3.9 4n 0.1
13.2 6.28 5.8y 1

2. 解方程。
4x + 3.1 = 6.5 x - 0.5x = 10.5 0.6x + 3.4x = 16
9.3x - 3.6x = 34.2 98x - x = 29.1 12x + 1.6x = 68

答案： x = 0.85 x = 21 x = 4
x = 6 x = 0.3 x = 5

思维提升 巧设未知数
如图，一副手套的价格是一个发卡的2倍，一条围巾的价格是一个发卡的3.6倍。一条围巾多少元？

答案： 解：设一个发卡x元，则一副手套2x元，一条围巾3.6x元。x + 2x + 3.6x = 56.1
x = 8.5 3.6x = 3.6×8.5 = 30.6。