how do you put the numbers 100 101 11 110 in base ten?

Question

how to write the numbers 100 110 101 11 in base ten form.

Answer 1

Binary:

(from right to left)

First digit * 1

Second digit * 2

Third digit * 4

100 = 1*4 + 0*2 + 0*1 = 4 + 0 + 0 = 4 in base 10

101 = 1*4 + 0*2 + 1*1 = 4 + 0 + 1 = 5 in base 10

11 = 1*2 + 1*1 = 2 + 1 = 3 in base 10

110 = 1*4 + 1*2 + 0*1 = 4 + 2 + 0 = 6 in base 10

Answer 2

100 or 0100 in binary is equal to 4 in decimal, 110 or 0110 in binary is equal to 6 in decimal, 101 or 0101 in binary is equal to 5 in decimal, 11 or 0011 in binary is equal to 3 in decimal. You solve from right to left multiplying the first unit by 1, second unit by 2, third unit by 4, and fourth unit by 8 and then adding the totals. Source: http://calc-pac.com/computer_science/4bit_binary_to_decimal_and_hex.html