《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。
0.6×0.25 = 95 - 9.5 = 1.2×5 = 6.4 + 3.6 - 4.9 =
26.16 + 3.61 = 0.53 + 2.47 = 7.8÷0.3 = 3.6 - 3.6÷9 =
16.8 + 2.02 = 0.78 - 0.6 = 2.59 + 9.1 = 12 - 2.4×5 =
3.8×0.1 = 5.6 + 3.04 = 91÷13 = 0.4 - 0.4×0.9 =
5.8÷2.9 = 7.6÷0.2 = 9.8×10 = 7.5 + 2.5÷0.5 =
3.5 - 3.1 = 0.8×0.25 = 3.6÷6 = 2.5×12×4 =
4.5×6 = 16.4 - 9.6 = 60÷0.3 = 1.5×0.7×2 =
3.9 + 4.2 = 3.7×20 = 64×0.1 = 0.78×11 - 0.78 =
8.7÷3 = 13.8 + 7.2 = 3.2×0.3 = 1.8÷0.6×2.4 =
15.4 - 4.5 = 2.5×30 = 18.6÷0.6 = 3.2 + 3.2÷0.4 =

答案： 0.15 85.5 6 5.1
29.77 3 26 3.2
18.82 0.18 11.69 0
0.38 8.64 7 0.04
2 38 98 12.5
0.4 0.2 0.6 120
27 6.8 200 2.1
8.1 74 6.4 7.8
2.9 21 0.96 7.2
10.9 75 31 11.2

2. 解方程。（带☆的要检验）
$x + 2.8 = 12.4$ 26 + x = 62 ☆$x - 4.8 = 5.2$
0.3 + x = 2.03 $x - 0.6 = 2 + 1.3$ ☆2.8 + x = 1.3 + 4.7

答案： $x = 9.6$ $x = 36$ $x = 10$
$x = 1.73$ $x = 3.9$ $x = 3.2$
（检验略）

思维提升 方程同解问题
方程$x - 6.5 = 5.8$和$x + α = 28.7$中，x 的值相同，α 的值是多少？

答案： $x - 6.5 = 5.8$ $x = 12.3$
$12.3 + a = 28.7$ $a = 16.4$
解析：因为$x$的值相同，所以可以先求出$x - 6.5 = 5.8$中$x$的值，求得$x = 12.3$，将$x = 12.3$代入$x + a = 28.7$中，得$12.3 + a = 28.7$，进而求出$a$的值。