Write the​ base-ten representation for each of the following​ base-five numerals.

​a) 413five  
​b) 2001five  
​c) 31five

your turn ...

To convert base-five numerals to base-ten representation, you need to multiply each digit by the corresponding power of 5 and then sum up the results.

a) 413five:

To convert this number to base ten, you need to evaluate:
4 * 5^2 + 1 * 5^1 + 3 * 5^0

Calculations:
4 * 25 + 1 * 5 + 3 * 1 = 100 + 5 + 3 = 108

Therefore, the base-ten representation of 413five is 108.

b) 2001five:

To convert this number to base ten, you need to evaluate:
2 * 5^3 + 0 * 5^2 + 0 * 5^1 + 1 * 5^0

Calculations:
2 * 125 + 0 * 25 + 0 * 5 + 1 * 1 = 250 + 0 + 0 + 1 = 251

Therefore, the base-ten representation of 2001five is 251.

c) 31five:

To convert this number to base ten, you need to evaluate:
3 * 5^1 + 1 * 5^0

Calculations:
3 * 5 + 1 * 1 = 15 + 1 = 16

Therefore, the base-ten representation of 31five is 16.

a) To convert the base-five numeral 413five to base-ten, we can use the following calculation:

4 * 5^2 + 1 * 5^1 + 3 * 5^0

= 4 * 25 + 1 * 5 + 3 * 1

= 100 + 5 + 3

= 108

Therefore, the base-ten representation of 413five is 108.

b) To convert the base-five numeral 2001five to base-ten, we can use the following calculation:

2 * 5^3 + 0 * 5^2 + 0 * 5^1 + 1 * 5^0

= 2 * 125 + 0 * 25 + 0 * 5 + 1 * 1

= 250 + 0 + 0 + 1

= 251

Therefore, the base-ten representation of 2001five is 251.

c) To convert the base-five numeral 31five to base-ten, we can use the following calculation:

3 * 5^1 + 1 * 5^0

= 3 * 5 + 1 * 1

= 15 + 1

= 16

Therefore, the base-ten representation of 31five is 16.