ElementaryAlgebra-SAG.pdf - OpenStax 1.1 Introduction to...

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OpenStax 1.1 Introduction to Whole Numbers This file is copyright 2017, Rice University. All Rights Reserved. Elementary Algebra 1: Foundations 1.1 Introduction to Whole Numbers Use Place Value with Whole Numbers In the following exercises, find the place value of each digit in the given numbers. 1. 51,493 (a) 1 (b) 4 (c) 9 (d) 5 (e) 3 2. 87,210 (a) 2 (b) 8 (c) 0 (d) 7 (e) 1 Answer: (a) hundreds (b) ten thousands (c) ones (d) thousands (e) tens 3. 164,285 (a) 5 (b) 6 (c) 1 (d) 8 (e) 2 4. 395,076 (a) 5 (b) 3 (c) 7 (d) 0 (e) 9 Answer: (a) thousands (b) hundred thousands (c) tens (d) hundreds (e) ten thousands 5. 93,285,170 (a) 9 (b) 8 (c) 7 (d) 5 (e) 3 6. 36,084,215
OpenStax 1.1 Introduction to Whole Numbers This file is copyright 2017, Rice University. All Rights Reserved. (a) 8 (b) 6 (c) 5 (d) 4 (e) 3 Answer: (a) ten thousands (b) millions (c) ones (d) thousands (e) ten millions 7. 7,284,915,860,132 (a) 7 (b) 4 (c) 5 (d) 3 (e) 0 8. 2,850,361,159,433 (a) 9 (b) 8 (c) 6 (d) 4 (e) 2 Answer: (a) thousands (b) hundred billions (c) ten millions (d) hundreds (e) trillions In the following exercises, name each number using words. 9. 1,078 10. 5,902 Answer: five thousand, nine hundred two 11. 364,510 12. 146,023 Answer: one hundred forty-six thousand, twenty-three 13. 5,846,103 14. 1,458,398 Answer: one million, four hundred fifty-eight thousand, three hundred ninety-eight 15. 37,889,005 16. 62,008,465 Answer: sixty-two million, eight thousand, four hundred sixty-five
OpenStax 1.1 Introduction to Whole Numbers This file is copyright 2017, Rice University. All Rights Reserved. In the following exercises, write each number as a whole number using digits. 17. four hundred twelve 18. two hundred fifty-three Answer: 253 19. thirty-five thousand, nine hundred seventy-five 20. sixty-one thousand, four hundred fifteen Answer: 61,415 21. eleven million, forty-four thousand, one hundred sixty-seven 22. eighteen million, one hundred two thousand, seven hundred eighty-three Answer: 18,102,783 23. three billion, two hundred twenty-six million, five hundred twelve thousand, seventeen 24. eleven billion, four hundred seventy-one million, thirty-six thousand, one hundred six Answer: 11,471,036,106 In the following, round to the indicated place value. 25. Round to the nearest ten. (a) 386 (b) 2,931 26. Round to the nearest ten. (a) 792 (b) 5,647 Answer: (a) 790 (b) 5,650 27. Round to the nearest hundred. (a) 13,748 (b) 391,794 28. Round to the nearest hundred. (a) 28,166 (b) 481,628 Answer: (a) 28,200 (b)481,600 29. Round to the nearest ten. (a) 1,492 (b) 1,497 30. Round to the nearest ten. (a) 2,791 (b) 2,795 Answer: (a) 2,790 (b) 2,800
OpenStax 1.1 Introduction to Whole Numbers This file is copyright 2017, Rice University. All Rights Reserved. 31. Round to the nearest hundred. (a) 63,994 (b) 63,040 32. Round to the nearest hundred. (a) 49,584 (b) 49,548 Answer: (a) 49,600 (b) 49,500 In the following exercises, round each number to the nearest (a) hundred; (b) thousand; and (c) ten thousand. 33. 392,546 34. 619,348 Answer: (a) 619,300 (b) 619,000 (c) 620,000 35. 2,586,991 36. 4,287,965 Answer: (a) 4,288,000 (b) 4,288,000 (c) 4,290,000 Identify Multiples and Factors In the following exercises, use the divisibility tests to determine whether each number is divisible by 2, 3, 5, 6, and 10. 37. 84 38. 9,6 96 Answer: divisible by 2, 3, and 6 39. 75 40. 78 Answer: divisible by 2, 3, and 6 41. 900 42. 800 Answer: divisible by 2, 5, and 10 43. 986 44. 942 Answer: divisible by 2, 3, and 6
OpenStax 1.1 Introduction to Whole Numbers This file is copyright 2017, Rice University. All Rights Reserved.

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