s2.1.3
Powers of 2, 3, 5
1,000 questions2 starred · within 5% counts
Memorizing powers of 2, 3, and 5 is beneficial for a variety of problems, from approximations to logarithms. While some higher powers can be calculated from known squares (e.g., ), the following powers are useful to have memorized for quick recall:
2³ = 8
3³ = 27
5³ = 125
2⁴ = 16
3⁴ = 81
5⁴ = 625
2⁵ = 32
3⁵ = 243
5⁵ = 3125
2⁶ = 64
3⁶ = 729
2⁷ = 128
3⁷ = 2187
2⁸ = 256
2⁹ = 512
2¹⁰ = 1024