What is the prefix, symbol, and meaning of the exponent 10 to the 1st power?

What is the prefix, symbol, and meaning of the exponent 10 to the 1st power?

• A. Deci; d; Tenth
• B. Hecto; h; Hundred
• C. Kilo; k; Thousand
• D. Deca; da; Ten

Answer: (D)

Understanding SI prefixes and the powers of ten they represent helps decode this. The exponent 10^1 equals ten, so the prefix that means ten is used. That prefix is deca-, with the symbol da, meaning ten. For context, deci- corresponds to 10^-1 (one tenth) with symbol d; hecto- corresponds to 10^2 (one hundred) with symbol h; kilo- corresponds to 10^3 (one thousand) with symbol k. So the prefix that matches 10^1 is deca-, da, meaning ten.

Understanding SI prefixes and the powers of ten they represent helps decode this. The exponent 10^1 equals ten, so the prefix that means ten is used. That prefix is deca-, with the symbol da, meaning ten.

For context, deci- corresponds to 10^-1 (one tenth) with symbol d; hecto- corresponds to 10^2 (one hundred) with symbol h; kilo- corresponds to 10^3 (one thousand) with symbol k. So the prefix that matches 10^1 is deca-, da, meaning ten.