Write the number 112 in "expanded form."  

Expert Answers
ophelious eNotes educator| Certified Educator

Expanded form is a way of writing a number so that you can see how a number is "constructed" out of other numbers.  It is sort of like looking under the hood of a number to see what makes it tick.

In your example of 112, we would have 1 X 100 + 1 X 10 + 1 X 2=112 (remember that the multiplication parts of the problem are done before the addition parts according to the order of operations.)  If you add those together, you get 112.  This is similar to what is called "standard" form, which would be 100+10+2=112.

campbelh eNotes educator| Certified Educator

(1 * 100) + (1 * 10) + (2 *  1)

jess1999 | Student

The number 112 in expanded form would look like : 

100 + 10 + 2 = 112

ik9744 | Student

100 + 10 + 2 = 112

crystaltu001 | Student

112

100+ 10 + 2 = 112

nisarg | Student

(100*1)+(10*1)+(2*1)

a little simplified is 100+10+1+2

neela | Student

The expanded form in any x ( x is an imteger) base system is like a polynomial in the form:

An*x^n+An-1x^(n-1)+An-2*x^(n-2)+An-3*x^(n-3)+......A2*x^2+A1*x+A0, where An , An-1, An-2, ....A2,A1 and A0 are the positive integral coefficients such that 0 <= Ar< x and  r is  an integer 1 to n.

You did not cite the base. So, we take first 10 base , the most popular a decimal system and then  one hundred and twelve converted in base 5   and its expansion in the powers of 5 and   the  number 112 in base 5 and its expansion.

Procedure:

(i)

112 in 10 base:

So the 112/10 = quotient 11+remainder 2.

Take the quotient 11 above and divide by 10 to get the quotient and remainder:

11/10= quotient 1+ remainder 1

Take the quotient 1 above and again divide to get quotient and remainder:

1/10 = quotient 0 + remainder 1

Procedure is to go till the quotient is 0.

112= 3rd remainder* 10^ (3-1)+(second remainder*10^(2-1)+first remaider*10^(1-1)'

Therefore, 112= 1*10^(3-1)+1*10^(2-1)+2*10^(1-1) or

112=1*10^2+1*10+2*10^0 or

112=1*10^2+1*10^1+2*10^0 0r

112=1*100+1*10+2.

(ii)

112 converted in 5 base:

112/5=quotient 22 +remainder 2

22/5= quotient 4 + remainder 2

4/5= quotient 0  remainder 4

Therefore 112 (one hundred and  five) in base 5 =  4*5^2+2*5+2.

(iii)

Now 112 in base 5 = 1*5^2+1*5+2