By Stefan Baratto, Barry Bergman, Donald Hutchison

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The McGraw-Hill Companies. All Rights Reserved. The Streeter/Hutchison Series in Mathematics Elementary and Intermediate Algebra 78. BUSINESS AND FINANCE Olga has $250 in her checking 79. account. She deposits $52 and then writes a check for $77. What is her new balance? Bal: Dep: CK # 1111: 80. 81. Name:___________ 79. STATISTICS Ezra’s scores on ﬁve tests taken in a mathematics class were 87, 71, 95, 81, and 90. What was the difference between the highest and the lowest of his scores? 1+5 = 2x5 = 4+5 = 15 - 2 = 4x3 = 3+6 = 9+4 = 3+9 = 1x2 = 13 - 4 = 5+6 = ______ :_____ Name _ = ___ 4x3 _ ____ 4 x 3 = ____ _ = ___ = ___ 2x5 _ ____ 2 x 5 = ____ 1+5 _ = ___ = ___ 4+5 _ ____ 4 + 5 = ____ 2x5 _ = ___ = ___ 15 - 2 _ Name:__ 4+5 ____ 15 - 2 = ____ _ = ___ ____ = ___ 8x3 2 ____ _ ____ 8 x 3 = ____ 15 _ _ = ___ = ___ 3+6 4x3 ____ 3 + 6 = ____ ____ _ = ___ 6 = 1 + 55 + 3+6 ____ 5 + 6 = ____ = 9__= ____ ____ 2 __ + = 6 4 x _ 5 = 9+ ____ 6 + 9 = ____ _ 2__= ___ 4 x 3 = x__ = ___ 4 + _ 5 =1 ____ 3+9 ___ ____ 1 x 2 = ____ _ 2 = x 4 = ___15 - 2 13__-__ _ 5 = ____ 1x2 _ = ____ 4 = ___ ____ 13 - 4 = ____ 4+5 ___ + = 4 9 = x3 = ____ 13 - 4 15 _ ____ 9 + 4 = ____ ____ 2 = = 3___ +6 ____ ________ 5+6 = __ 8x3 Name:___ __ 9+4 = __ = __ __ 3+6 __ 3+9 = __ 1 + 5 = = __ __ 5+6 __ 1x2 = __ = __ __ 2 x 5 = 6+9 __ 13 = __ ____ 4 = 4x3 = __ 4 + 5 = 1x2 __ __ ____ 5+6 = __ ____ 1+5 = = __ __ 15 - 2 = 2x5 = 13 __ 4 = ____ ____ = __ 2x5 = __ 4+5 4x3 = 9+4 ____ = __ ____ 4+5 = __ 3+6 = 15 - 2 = ____ ____ 15 - 2 = 8x3 = 9+4 = ____ ____ 4x3 = 3+6 = 3+9 = ____ ____ 3+6 = 5+6 = 1x2 = ____ ____ 9+4 = 6+9 = 13 - 4 = ____ ____ 3+9 = 1x2 = 5+6 = ____ ____ 1x2 = 13 - 4 = ____ ____ 13 - 4 = 9+4 = ____ 5+6 = 82.

The whole numbers are the natural numbers together with zero. The Streeter/Hutchison Series in Mathematics The set of three dots is called an ellipsis and indicates that a pattern continues. © The McGraw-Hill Companies. All Rights Reserved. NOTE c 37 38 Baratto−Bergman: Elementary and Intermediate Algebra, Fourth Edition 0. 2 17 The natural numbers, 0, and the negatives of natural numbers make up the set of integers. Deﬁnition Integers The integers consist of the natural numbers, their negatives, and zero.

12. 23. Ϫ(Ϫ7) ϭ Ϫ7 24. The opposite of 15 is Ϫ15. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 3 5 17. ᎏᎏ is an integer. 18. 7 is not an integer. 19. 15 is not an integer. 20. ͉Ϫ9͉ ϭ Ϫ9 5 7 Complete each statement. 25. The absolute value of Ϫ10 is ________. 26. Ϫ(Ϫ12) ϭ ________ 27. ͉Ϫ20͉ ϭ ________ > Videos 28. The absolute value of Ϫ12 is ________. 29. The absolute value of Ϫ7 is ________. 30. The opposite of Ϫ9 is ________. 31. The opposite of 30 is ________. 29. 30. 31. 32.