Developmental Mathematics for College Students, 2nd Edition - download pdf or read online

By Alan S. Tussy, R. David Gustafson

ISBN-10: 0534997767

ISBN-13: 9780534997762

Tussy and Gustafson's totally built-in studying strategy is designed to extend scholars' reasoning talents and educate them how one can learn, write, and imagine mathematically. during this textual content, scholars get an intensive assessment of mathematics and geometry in addition to the entire themes coated in a regular straight forward algebra path. The authors construct the powerful mathematical origin essential to provide scholars self belief to use their newly bought abilities in additional arithmetic classes, at domestic, or at the activity.

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Extra resources for Developmental Mathematics for College Students, 2nd Edition (with CD-ROM and Enhanced iLrn(TM) Tutorial, iLrn(TM) Math Tutorial, The Learning Equation Labs, Student Resource Center Printed Access Card)

Example text

Subtract 122 from 224. 23. 25 ϩ 13 24. 47 ϩ 12 25. 156 ϩ 305 26. 647 ϩ 38 27. 19 ϩ 39 ϩ 53 28. 27 ϩ 16 ϩ 48 29. (95 ϩ 16) ϩ 39 30. 832 ϩ (97 ϩ 27) 31. 25 ϩ (321 ϩ 17) 32. (4,231 ϩ 213) ϩ 5,234 33. 632 ϩ347 34. 35. 1,372 ϩ 613 37. 63. Subtract 305 from 423. 64. Subtract 270 from 330. 65. 1,537 Ϫ 579 66. 2,470 Ϫ 863 67. 4,267 Ϫ2,578 68. 7,356 Ϫ3,578 423 ϩ570 69. 17,246 Ϫ 6,789 70. 34,510 Ϫ27,593 36. 2,477 ϩ 693 71. 15,700 Ϫ15,397 72. 35,021 Ϫ23,999 6,427 ϩ3,573 38. 3,567 ϩ8,778 Perform the computations.

Since the result, 15, exceeds 9, place the 5 in the hundreds column of the answer and carry 1 (shown in green) to the thousands column. 1 1 9,8 3 4 ϩ 692 1 0,5 2 6 Answer 2,172 Since the sum of the digits in the thousands column is 10, write 0 in the thousands column and 1 in the ten thousands column of the answer. Thus, 9,834 ϩ 692 ϭ 10,526. To see if the result in Example 2 is reasonable, we can estimate the answer. We know that 9,834 is a little less than 10,000, and 692 is a little less than 700.

The position of a digit in a numeral determines its value. In the numeral 325, the 5 is in the ones column, the 2 is in the tens column, and the 3 is in the hundreds column. 3 2 5 Hundreds column c ¡ 4 c Ones column Tens column To make a numeral easy to read, we use commas to separate its digits into groups of three, called periods. 1 An Introduction to the Whole Numbers and so on. The following table shows the place value of each digit in the numeral 345,576,402,897,415, which is read as ⎫ ⎪ ⎪ ⎬ ⎪ ⎪ ⎭ 9 7 4 Thousands 1 5 Ones Ones Hundreds 8 Tens 2 Millions Ones Tens Hundreds 0 Hundreds 4 Ones 6 Billions Ones Tens Hundreds Trillions 7 Tens 5 Ones 5 4 hundred fifteen Tens 4 897 thousand ⎫ ⎪ ⎪ ⎬ ⎪ ⎪ ⎭ ⎫ ⎪ ⎪ ⎬ ⎪ ⎪ ⎭ 3 402 million Hundreds 576 billion ⎫ ⎪ ⎪ ⎬ ⎪ ⎪ ⎭ 345 trillion ⎫ ⎪ ⎪ ⎬ ⎪ ⎪ ⎭ three hundred forty-five trillion, five hundred seventy-six billion, four hundred two million, eight hundred ninety-seven thousand, four hundred fifteen As we move to the left in this table, the place value of each column is 10 times greater than the column to its right.

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Developmental Mathematics for College Students, 2nd Edition (with CD-ROM and Enhanced iLrn(TM) Tutorial, iLrn(TM) Math Tutorial, The Learning Equation Labs, Student Resource Center Printed Access Card) by Alan S. Tussy, R. David Gustafson


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