Number Bases Made Easy: Step-by-Step Conversions & WAEC/NECO/JAMB Past Questions

Learn Number Bases in Mathematics step-by-step with clear explanations and exam-focused examples. This lesson covers everything you need for WAEC, NECO, and JAMB — including how to convert between different bases and how to handle digits above 9 in hexadecimal (A–F). Perfect for secondary school students, exam candidates, and teachers.

In this video, you will learn:

• What a number base (radix) is and how positional notation works
• How to convert decimal → any base (base-n) using the division–remainder method
• How to convert any base → decimal using positional multiplication
• How to convert base-m → base-n using decimal as an intermediate
• Shortcuts for faster base conversion in exams
• Everything about hexadecimal (base 16) — digits above 9 (A, B, C, D, E, F)
• Fully solved WAEC, NECO & JAMB past questions
• Conversion examples including decimal numbers above 10
• Practice problems with solutions

Past Questions Solved in This Lesson:
– WAEC number base conversion question
– NECO conversion between bases
– JAMB binary, octal, and hexadecimal questions
– Problems involving large decimals and digits above 9 (hex)

Practice Questions for You:

Convert from base 10 to base 3

Convert other bases to decimal

Convert 186 (base 10) to hexadecimal

Try them, then check the answers inside the video.

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