12 is 40% of what number
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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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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