30-Minute IB Math Workout: 12 Tough Arithmetic Sequences & Series Problems

Struggling with arithmetic sequences and series in IB Math SL? In this 30-minute problem-solving session, we tackle 12 challenging IB-style questions step by step. You'll learn how to:

✅ Find the nth term of an arithmetic sequence
✅ Calculate the sum of an arithmetic series
✅ Interpret IB-style word problems and avoid common mistakes
✅ Master exam techniques to save time and boost accuracy

These aren’t routine problems — they’re designed to push your understanding and prepare you for the hardest IB exam questions. Perfect for test prep, homework help, or IA support.

📘 What You’ll Learn:

How to identify when to use formulas for Un and Sn.

Real-world IB-style applications

Common traps and how to avoid them

Expert tips for maximizing your IB Math score

If you're aiming for a 6 or 7 in IB Math SL, this video will give you the skills and confidence to succeed.

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0:00 Intro & Review
1:15 Problem 1
2:27 Problem 2
3:30 Problem 3
5:35 Problem 4
7:42 Problem 5
10:32 Problem 6
12:34 Problem 7
14:16 Problem 8
15:59 Problem 9
21:05 Problem 10
23:13 Problem 11
24:31 Problem 12