Lesson 43 — Scientific Notation

🎯 Goal

Represent very large or very small numbers using scientific notation.

📖 Lesson Description

• Scientific notation: \( a \times 10^n \), where \(1 \le a < 10\)
• Large number: 45000 → \( 4.5 \times 10^4 \)
• Small number: 0.0032 → \( 3.2 \times 10^{-3} \)

✏️ Practice

1. Write 120000 in scientific notation
2. Write 0.00056 in scientific notation
3. Convert \( 7.2 \times 10^5 \) to standard form