Answered: 1. You tell a student that when you…

1. You tell a student that when you multiply 0.5 * 0.7, you move the decimal over 2 places for the answer. Your student asks how do you know and why does it work? What do you tell them?

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter61: Areas Of Circles, Sectors, And Segments

Section: Chapter Questions

Problem 47A: Compute the area of the steel insert (shaded segment) shown. Round the answer to 1 decimal place.

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Question

help with both, please

1. You tell a student that when you multiply 0.5 * 0.7, you move the decimal over 2 places for
the answer. Your student asks how do you know and why does it work? What do you tell them?
2. Use an area model to do the following multiplication: 0.2 * 0.15

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