Square, cube, reciprocals and roots of first 30 numbers

Here are values to be crammed for making fast calculations :

	Reciprocal	square	cube	roots
1	1.00	1	1	1
2	0.50	4	8	1.41421
3	0.33	9	27	1.73205
4	0.25	16	64	2
5	0.20	25	125	2.23607
6	0.16	36	216	2.44949
7	0.142857	49	343	2.64575
8	0.125	64	512	2.82843
9	0.11	81	729	3
10	0.10	100	1000	3.16228
11	0.09	121	1331	3.31662
12	0.083	144	1728	3.4641
13	0.0769	169	2197	3.60555
14	0.0714286	196	2744	3.74166
15	0.066	225	3375	3.87298
16	0.0625	256	4096	4
17	0.0588	289	4913	4.12311
18	0.055	324	5832	4.24264
19	0.0526	361	6859	4.3589
20	0.05	400	8000	4.47214
21	0.0476	441	9261	4.58258
22	0.045	484	10648	4.69042
23	0.0434	529	12167	4.79583
24	0.0416	576	13824	4.89898
25	0.04	625	15625	5
26	0.0385	676	17576	5.09902
27	0.037	729	19683	5.19615
28	0.0357	784	21952	5.2915
29	0.0344	841	24389	5.38516
30	0.033	900	27000	5.47723