Answered: 12 is 40% of what number

Math

Advanced Math

12 is 40% of what number

PREALGEBRA

15th Edition

ISBN:9781938168994

Author:OpenStax

Publisher:OpenStax

Chapter9: Math Models And Geometry

Section: Chapter Questions

Problem 473PT: Bonita has $2.95 in dimes and quarters in her pocket, If she has 5 more dimes than quarters, how...

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Question

12 is 40% of what number

Lea makes a double number line and starts with ×10, but then gets concerned. “That’s too big... I have to start over.” What did Lea do and why don’t she have to start over.

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Lea makes a double number line and starts with ×10, but then gets concerned. “That’s too big... I have to start over.” What did Lea do and why don’t she have to start over.

if 12 is 40% =30

why would Leah use x10 to find the answer

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