Free practice on Number Bases and Modulo Arithmetic for Class 5, following the Cameroon primary school curriculum (English subsystem). Every answer is explained, so a parent who is not sure of the answer can still help.
Convert 101 (base 2) to base ten.
Write your answer, then check below.
Answer:
1×4 + 0×2 + 1×1 = 5.
Convert 11 (base 2) to base ten.
Write your answer, then check below.
Answer:
1×2 + 1×1 = 3.
Convert 24 (base 5) to base ten.
Write your answer, then check below.
Answer:
2×5 + 4×1 = 14.
Convert 13 (base ten) to base 5.
Answer: A. 23 (base 5)
13 = 2 fives + 3 units = 23 in base 5.
Which digits can we use in base 2?
Answer: A. 0 and 1
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