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Name: Elementary Algebra Written Homework Chapter 1 The Commutative Property [1.2] 1. Is subtraction commutative? Give an example to illustrate your answer. Addition and subtraction of fractions [1.3 - 1.6] In MyMathLab, getting the correct answer in simplified form is sufficient, because a machine cannot look at your work and verify that you did the process by hand. However, knowing how to use a calculator is not sufficient for test-taking. Make sure you are able to do the process by hand, showing all of the relevant steps as you go. 2. Add. 7 5 + 8 12 3. Subtract. 2 " 1% ! !$! ' 3 # 6& Sets of numbers [1.4] 4. Give an example of a rational number that is not an integer. 5. Give an example of a real number that is not a rational number. Signs with exponents [1.8] 6. Evaluate a. !52 b. ( !5)2 7. In your own words, explain how you know for certain that you got the right sign for your answer on each of the above. Ch 1 Page 1 of 1