Why do you multiply by a power of 10 when writing a repeating decimal as a rational number

asked Jan 8, 2023 166k views

3 votes

2.7k points

Please log in or register to add a comment.

1 vote

Answer:

The idea is to multiply by 10 so that when we subtract the original number from the multiple, the repeating part cancels out.

Farrell answered Jan 13, 2023

3.6k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.4m questions

4.3m answers