SOLUTION: If 10^51 � 9 is written as an integer in standard form , what is the sum of the integer�s digits

Question 268409: If 10^51 � 9 is written as an integer in standard form , what is the sum of the integer�s digits

Answer by jsmallt9(3759) (Show Source): You can put this solution on YOUR website!
is a 1 followed by 51 zeros. When we subtract 9 from it we will have to borrow. If you think about how borrowing works, you will realize that the 1 at the start will become a zero and that all the zeros except the last one (IOW 50 of them) will become 9's and the last one will become a 10. After we subtract the 9 we will get a 1 at the end with 50 9's in front of it. The sum of 50 9's and a 1 would be 50*9 + 1 = 450 + 1 = 451.
RELATED QUESTIONS
If 5^678 is written as an integer, what are it's final four digits? (answered by Alan3354,ikleyn)

Please help me to solve this problem,,, In an integer between 10 and 100, the unit's... (answered by ikleyn)

What is the equation of the given line in standard form? Use integer coefficients. (answered by ewatrrr)

What is the equation of the given line in standard form? Use integer coefficients. (answered by solver91311)

If 5 is added to the square of an integer, the result is 4 less than 10 times that... (answered by ankor@dixie-net.com,josgarithmetic)

The equation of the line with an x-intercept of 1 and a y-intercept of −1 can be... (answered by Fombitz,josmiceli)

if twice an integer is the same as one-third of six times that integer, what is the... (answered by stanbon)

A positive integer has three digits. The product of the digits is 135. What is the sum of (answered by Edwin McCravy)

An integer is composed of three digits. The first digit is even. The second digit is six... (answered by vleith)