Variable Substitution Practice
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Variable Substitution Practice
🔢 Part 1: Basic Variable Substitution
🚴 Part 2: Real-World Variable Problems
Step 1: How many wheels does a tricycle have? x = _____
Step 2: Substitute into 2x + 5 = 2(____) + 5
This tells you how many hours you are awake!
🔄 Part 3: How Variables Affect Results
| x value | 2x + 3 | Result |
|---|---|---|
| 1 | 2(1) + 3 | _____ |
| 3 | 2(3) + 3 | _____ |
| 5 | 2(5) + 3 | _____ |
📐 Part 4: Simple Formulas (Extension)
Formula: Area = l × w
Let s = speed and t = time
Distance = s × t = _____ × _____ = _____ kilometres
🤔 Part 5: Understanding Variables
🧩 Part 6: Variable Challenge
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