Powers of 2 to memorize (up to 1024)

The list

Power	Value
$2^0$	1
$2^1$	2
$2^2$	4
$2^3$	8
$2^4$	16
$2^5$	32
$2^6$	64
$2^7$	128
$2^8$	256
$2^9$	512
$2^{10}$	1024

The mnemonic shortcut

Each value is double the previous one. Learn the rhythm, not the list.

Why it’s useful

• Computing: memory, file sizes (1 KB ≈ 1024 bytes).
• Probability: $2^n$ = number of ways to choose “yes/no” $n$ times.
• Fast mental estimates: $2^{10} = 1024 \approx 1000$ → quick estimation.

The bonus trick

$2^{10} \approx 10^3$ so $2^{20} \approx 10^6$ (a million), $2^{30} \approx 10^9$ (a billion). Handy for estimating without a calculator.

?Your turn

What is 2⁷?

A.64B.128C.256D.512

Check