a. Select a variety of one- and two-digit numbers between 1 and 99 and multiply each by 9. Record your results. b. Find the sum of the digits in each of your products in part (a). If the sum is not a one-digit number. find the sum of the digits of the resulting sum again until you obtain a one-digit number. c. Make a conjecture about the sum of the digits when a one- or two-digit number is multiplied by 9
a. Select a variety of one- and two-digit numbers between 1 and 99 and multiply each by 9. Record your results. b. Find the sum of the digits in each of your products in part (a). If the sum is not a one-digit number. find the sum of the digits of the resulting sum again until you obtain a one-digit number. c. Make a conjecture about the sum of the digits when a one- or two-digit number is multiplied by 9
Solution Summary: The author explains that a variety of one and two digit numbers between 1 and 99 and multiplied by 9 are as follows.
Survey of Mathematics with Applications with Integrated Review, A, Books a la carte edition, plus MyLab Math Student Access Card and Sticker (10th Edition)
Fundamentals of Differential Equations and Boundary Value Problems
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