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Number Sense & Algebra · Number sense

Exponents, Roots & Logs

Exponents are repeated multiplication; roots undo them; logarithms ask 'what power?'. The rules, why they work, and how logs turn compounding and doubling-time problems into simple arithmetic.

35 min · 6 steps · videoJump to quiz ↓
The Invention That Saved Science Ben Syversen · 29 min
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Step 1 of 6 · Overview35 min read ·
Key idea
Prereqs: Fractions, ratios & percentages. Next: Orders of magnitude & estimation. Follows Khan Academy Algebra 1/2 (exponents, radicals, logarithms) and MIT 18.01 prerequisites.
Next: 1. Exponent rules

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