登录
1. 直接写出得数。
0.25÷5=
0.68÷4=
3.64×2=
(13.5−12.5)÷2=
2×0.8=
6.3−0.7=
1.2÷24=
50×0.5+3=
3.2÷16=
13.85+2.2=
18.9+0.21=
1.6×4÷0.64=
0.08+0.22=
6.2×5=
0.36÷6=
6.66+1.2+0.34=
1.8×9=
37÷5=
3.3×2=
3.25−(0.8+0.25)=
8.4÷0.4=
30−9.9=
0.42×0.2=
1.52÷0.2×20=
36×0.2=
14÷20=
56.7÷70=
(20−0.1)÷0.5=
7.7÷77=
20.6÷0.01=
136×0.01=
9.5÷0.5÷0.2=
0.25÷5=
0.68÷4=
3.64×2=
(13.5−12.5)÷2=
2×0.8=
6.3−0.7=
1.2÷24=
50×0.5+3=
3.2÷16=
13.85+2.2=
18.9+0.21=
1.6×4÷0.64=
0.08+0.22=
6.2×5=
0.36÷6=
6.66+1.2+0.34=
1.8×9=
37÷5=
3.3×2=
3.25−(0.8+0.25)=
8.4÷0.4=
30−9.9=
0.42×0.2=
1.52÷0.2×20=
36×0.2=
14÷20=
56.7÷70=
(20−0.1)÷0.5=
7.7÷77=
20.6÷0.01=
136×0.01=
9.5÷0.5÷0.2=
答案
1. 0.05
0.17
7.28
0.5
1.6
5.6
0.05
28
0.2
16.05
19.11
10
0.3
31
0.06
8.2
16.2
7.4
6.6
2.2
21
20.1
0.084
152
7.2
0.7
0.81
39.8
0.1
2060
1.36
95
0.17
7.28
0.5
1.6
5.6
0.05
28
0.2
16.05
19.11
10
0.3
31
0.06
8.2
16.2
7.4
6.6
2.2
21
20.1
0.084
152
7.2
0.7
0.81
39.8
0.1
2060
1.36
95
2. 计算下面各题，怎样算简便就怎样算。
$6.82 ÷ 0.25 ÷ 0.4$
$(1.6 + 1.6 + 1.6 + 1.6) × 0.25$
$\frac{7}{8} × [ ( \frac{1}{2} + \frac{3}{4} ) ÷ \frac{15}{16} ]$
$0.48 × \frac{5}{6} + \frac{1}{6} ÷ \frac{25}{12}$
$5.5 × 48 + 0.55 × 520$
$9.5 - 4.8 × ( \frac{1}{12} + \frac{3}{16} )$
$6.82 ÷ 0.25 ÷ 0.4$
$(1.6 + 1.6 + 1.6 + 1.6) × 0.25$
$\frac{7}{8} × [ ( \frac{1}{2} + \frac{3}{4} ) ÷ \frac{15}{16} ]$
$0.48 × \frac{5}{6} + \frac{1}{6} ÷ \frac{25}{12}$
$5.5 × 48 + 0.55 × 520$
$9.5 - 4.8 × ( \frac{1}{12} + \frac{3}{16} )$
答案
2. 68.2
1.6
$\frac{7}{6}$
0.48
550
8.2
1.6
$\frac{7}{6}$
0.48
550
8.2
巧算：$2026×2025.2025 - 2025×2026.2026$。
答案
原式$= 2026 × 2025 × 1. 0001 - 2025 × 2026 × 1. 0001 = 0$
