Important Squares and Cubes to remember (1 to 30)

Number	Square (n²)	Cube (n³)
1	1	1
2	4	8
3	9	27
4	16	64
5	25	125
6	36	216
7	49	343
8	64	512
9	81	729
10	100	1000
11	121	1331
12	144	1728
13	169	2197
14	196	2744
15	225	3375
16	256	4096
17	289	4913
18	324	5832
19	361	6859
20	400	8000
21	441	9261
22	484	10648
23	529	12167
24	576	13824
25	625	15625
26	676	17576
27	729	19683
28	784	21952
29	841	24389
30	900	27000

✅ Exam Tip:

• You must know squares up to 30 and cubes up to 20 by heart.
• For cubes above 20, quick estimation (e.g., 25³ ≈ 15,000+) is sufficient for most simplification problems.