Math for fourth grade

Question

What number has 8 hundreds, 7 fewer ten thousands than hundreds, 7 fewer ones than hundreds, 1 more thousand than ten thousands, 7 more hundred thousands than ones, and 5 fewer tens than hundreds?

Answer 1

I am going to use letters to denote each numerical place.

We're given 8 hundreds, so we can put that in:

edc,8ba

the ten thousands' place is 7 less than hundreds, so 8-7 = 1:

e1c,8ba

We also have 7 fewer ones than hundreds:

e1c,8b1

We have 1 more value in the thousand than then thousand, so 1+1 = 2:

e12,8b1

We have 7 more in the hundred thousands than in the ones column, so 1+7 = 8:

812,8b1

We have 5 less in the tens column than in the hundreds, so 8-5 = 3:

812,831 is your answer