SOLUTION: a new colony was built and the builder give contract to a sign maker to number the building from number 1 to 500. How many zeros will he need ?

Question 1062339: a new colony was built and the builder give contract to a sign maker to number the building from number 1 to 500. How many zeros will he need ?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
10
20
30
40
50
60
70
80
90
100
All those a count of 10
-After that,
101 through 109-------just these a count of 9
-
110, 120,130, ... 190 , 200-------these a count of 10
-
From 201 to 300-------count of 9+10
-
and then a count of three more of 9+10.

Sum the counts.
Answer by MathTherapy(10557) (Show Source): You can put this solution on YOUR website!

a new colony was built and the builder give contract to a sign maker to number the building from number 1 to 500. How many zeros will he need ?

You need to count them.
I'll start you off: From 10 - 100, there are 11 zeroes.
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