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Chapter 6.3, Problem 21P

a. Write and solve a simple word problem for 1200 ÷ 30.
b.Use the situation of your word problem in part (a) to help you solve 1200 ÷ 31 without a calculator or a division algorithm by modifying your solution to 1200 ÷ 30.
c. Use the situation of your word problem in part (a) to help you solve 1200 ÷ 29 without a calculator or a division algorithm by modifying your solution to 1200 ÷ 30.

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Sometimes it is more convenient to express a number as a product of a power of 10 and a number that is not between 1 and 10. For example, suppose that we want to calculate √640,000. We can proceed as follows: √640,000 = √((64)(104)) = ((64)(104))1/2 = (64)1/2(104)1/2 = (8)(102) = 8(100) = 800 Compute each of the following without a calculator, and then use a calculator to check your answers. ∛27,000
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Chapter 6 Solutions

Mathematics For Elementary Teachers With Activities Books A La Carte Plus Mymathlab -- Access Card Package Format: Unbound (saleable) With Access Card

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