This drill covers cubing (n³), scaled by difficulty — easy stays within the range most people memorize outright (1–8), while medium and hard push into numbers that genuinely require a method rather than recall.
Memorizing 1³ through 10³ cold is worth doing once, since every other cube can be estimated or verified against them. For larger numbers, breaking the value into tens and units and expanding with the binomial cube identity is the fastest reliable route — covered in the shortcuts guide.
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