← Class 8 unitsComputational Thinking
Class 8
Chapter 2: Power Play
Exponents are a short way to write repeated multiplication. Laws: aᵐ × aⁿ = aᵐ⁺ⁿ; aᵐ ÷ aⁿ = aᵐ⁻ⁿ; (aᵐ)ⁿ = aᵐⁿ; a⁰ = 1.
Learning outcomes
- Use exponents and laws of exponents
- Express large/small numbers in standard form
Activities
- Powers-of-ten timeline of distances
Worked examples
Read through these first, then try the practice below.
Example 1 — Multiply powers
Simplify 2³ × 2⁴.
Solution: Add exponents: 2³⁺⁴ = 2⁷ = 128.
Example 2 — Standard form
Write 3000 in standard form.
Solution: 3000 = 3 × 10³.
Self-do practice
Question 1 of 3 · Score 0/0What is 2⁵?
Sign in as a student in this class to save your progress.