Asked by Taylor

Eric's notebook has 30 pages he wants to number all the pages beginning with 1 how many digits will he write when he writes in his notebook
Answered by Ms. Sue
What do you think?

Answered by Bosnian
Numbers 1 ÷ 9 are one digits numbers.

Numbers 10 ÷ 30 are two digits numbers.


Obviously Eric will write 9 one digits numbers and 21 two digits numbers.


9 * 1 + 21 * 2 = 9 + 42 = 51 digits
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