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Q1. Write a pair of negative integers whose difference is . Q2. Write a positive integer and negative integers whose sum is Q3. Subtract the sum of Q4. Subtract Q5. Write the additive inverse of the following: (i) . . from the sum of . (ii) Q6. Simplify : Q7. If Q8. For each of the following, write True or False: (i) The smallest integer is . Q9. , verify that (ii) The sum of two negative integers is always negative. (iii) The sum of a negative integer and a positive integer is always positive. Multiply: (i) (ii) (iii) Q10. Find the product: Q11. Simplify: Q12. In a class test containing and questions, marks are given for every correct answer marks are given for every incorrect answer. Shweta attempts all questions but only of her answers are correct. What is her total score? Q13. By how much does exceeds Q14. By what should we divide © Copyright 2011 - 12 Educomp Solutions Ltd. ? to get ? Page 1 of 3 Q15. Evaluate: (i) (ii) Q16. Fill in the blanks: (i) (ii) Q17. By what integer should we divide to get answer as Q18. Let Q19. multiplication over addition. Let Q20. An elevator descends into a mine shaft at the rate of ? . Then verify the Associative law and distributive law of descent starts from reach . Then show that . . If the above the ground level, how long will it take to . Answers A1. A2. A3. A4. A5. (i) (ii) A6. A7. A8. A9. Hint: Calculate LHS and RHS, and then verify that they are equal. (i)False (ii) True (iii) False (i) (ii) (iii) A10. A11. © Copyright 2011 - 12 Educomp Solutions Ltd. Page 2 of 3 A12. A13. A14. A15. (i) (ii) A16. (i) (ii) A17. A18. Hint: AssociativeLaw: Distributive law a x (b + c) = (a + b) + (a x c) A19. Hint: Calculate LHS and RHS separately and show. A20. © Copyright 2011 - 12 Educomp Solutions Ltd. Page 3 of 3