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miller_prealgebra_2e_ch1_3

78 Chapter 1 Whole Numbers Section 1.8 Mixed Applications and Computing Mean Key Concepts Many applications require several steps and several mathematical operations. The mean is the average of a set of numbers.To find the mean, add all the values and divide by the number of values. Examples Example 1 Nolan received a doctor’s bill for $984. His insurance will pay $200, and the balance can be paid in 4 equal monthly payments. How much will each payment be? Solution To find the amount not paid by insurance, subtract $200 from the total bill. 984 200 784 To find Nolan’s 4 equal payments, divide the amount not covered by insurance by 4. Nolan must make 4 payments of $196 each. Example 2 Find the mean (average) of Michael’s scores from his homework assignments. 40, 41, 48, 38, 42, 43 Solution 40 41 48 38 42 43 The average is 42. 6 252 6 42 784 4 196 Section 1.2 For Exercises 1 and 2, determine the place value for each underlined digit. 1. 2. 10,024 821,811 For Exercises 3 and 4, convert the numbers to standard form. 3. 4. 9 ten-thousands 2 thousands 4 tens 6 ones 5 hundred-thousands 3 thousands 1 hundred 6 tens For Exercises 5 and 6, convert the numbers to expanded form. 5. 3,400,820 6. 30,554 For Exercises 7 and 8, write the numbers in words. 7. 245 8. 30,861 For Exercises 9 and 10, write the numbers in standard form. 9. Three thousand, six-hundred two 10. Eight hundred thousand, thirty-nine Chapter 1 Review Exercises


miller_prealgebra_2e_ch1_3
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