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AQA · GCSE · Computer Science · Higher

Binary-to-decimal number conversion

Q02.1 1 mark

Convert the binary number 10110111 into decimal.

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Marking points

  1. 1 Gives the decimal value 183.

Full-mark answer

183

Why this answer loses marks

I treated the bit pattern as ordinary decimal digits.

Each bit needs its base-two place value; reading the pattern as a base-ten number skips the conversion method.