初等数学I · free preview
Integer Exponents
A power is shorthand for repeated multiplication. Same base: add exponents to multiply, subtract to divide, multiply for a power of a power. Zero and negative exponents are forced by these laws. We finish with look-alike expressions.
1. Powers: Shorthand for Repeated Multiplication
Powers: Shorthand for Repeated Multiplication
2. Which One Is Different
Which of the following is not equal to the other three?
3. Multiplying and Dividing Same-Base Powers
Multiplying and Dividing Same-Base Powers
4. Evaluate 3²·3³
Evaluate .
5. Evaluate 10⁶÷10³
Evaluate .
6. Examples: Combine Same Bases First, Then Compute
Examples: Combine Same Bases First, Then Compute
7. True or False: 2³·5³=10⁶
True or false: .
8. Zero and Negative Exponents
Zero and Negative Exponents
9. Which Power Is Undefined
Which of the following is undefined?
10. Evaluate 2⁻⁴·2⁶·2⁻¹
Evaluate .
11. Power of a Power: Multiply the Exponents
Power of a Power: Multiply the Exponents
12. Examples: Powers of Powers and Stacking
Examples: Powers of Powers and Stacking
13. Practice: Power of a Power, Then Multiply
Evaluate .
14. Look-Alike Contrast: Sum or Product in the Numerator
Look-Alike Contrast: Sum or Product in the Numerator
15. Practice: Combine First, Then Divide
Evaluate .
16. Practice: Different Bases Don't Combine
Evaluate .
17. Practice: Group Mixed Bases
Evaluate .
18. Card: Laws of Exponents
What are the five laws of integer exponents (for )?
19. Self-explain: Why b⁰=1
Why is stipulated (for )? Start from the fraction .
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