Number systems: Operations in different bases

Number systems: Operations in different bases

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Lesson details

Key learning points

  1. In this lesson, we will be looking at adding and subtracting numbers in different bases.

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5 Questions

Q1.
What is 15(base 6) written in base 10?
Correct answer: 11
15
31
Q2.
What is 21(base 5) written in base 10?
Correct answer: 11
15
31
Q3.
What is 31(base 5) + 22(base 3) in base 10?
Correct answer: 16 + 8 = 24
31 + 22 = 55
8 + 8 = 16
Q4.
What is 101(base 2) x 101(base 2) in base 10?
101 x 101 = 1111
2 x 2 = 4
Correct answer: 5 x 5 = 25
Q5.
What is 10101(base 2) written in base 10?
10,101
Correct answer: 21
3

Lesson appears in

UnitMaths / Different number systems