Which term describes the numbering system with base 10?

Which term describes the numbering system with base 10?

• A. Binary Number System
• B. Decimal Number System
• C. Octal Number System
• D. Hexadecimal Number System

Answer: (B)

Counting in ten places means using ten symbols, 0 through 9, and each position represents a power of ten. This is why the term for the system is the Decimal Number System: a number like 345 is 3×10^2 + 4×10^1 + 5×10^0, showing how place value works with base 10. Other systems use different bases: Binary uses base 2 with digits 0 and 1, Octal uses base 8 with digits 0–7, and Hexadecimal uses base 16 with digits 0–9 and A–F for 10–15.

Counting in ten places means using ten symbols, 0 through 9, and each position represents a power of ten. This is why the term for the system is the Decimal Number System: a number like 345 is 3×10^2 + 4×10^1 + 5×10^0, showing how place value works with base 10. Other systems use different bases: Binary uses base 2 with digits 0 and 1, Octal uses base 8 with digits 0–7, and Hexadecimal uses base 16 with digits 0–9 and A–F for 10–15.