This quiz works best with JavaScript enabled. Home > Cbse > Class 9 > Mathematics > Number Systems > Class 9 Maths Chapter 1 Number Systems – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Maths Chapter 1 Number Systems Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... introduce the concept of 0 A) Ada lovelace. B) Charles Babbage. C) Aryabhat. D) None of the above. Show Answer Correct Answer: C) Aryabhat. 2. Express 1/3 in rationalized form. A) 1/3. B) 3. C) 3/3. D) 3/3. Show Answer Correct Answer: C) 3/3. 3. To which category does 1.5 belong? A) Whole # Only. B) Rational # Only. C) Integer Only. D) Integer & Rational #. Show Answer Correct Answer: B) Rational # Only. 4. If the ages of a mother and son are in the ratio 4:1 and the mother is 32, how old is the son? A) 8. B) 12. C) 16. D) 10. Show Answer Correct Answer: A) 8. 5. Carry out the division $\frac{36}{-4}$ A) $-\frac{3}{2}$. B) $-9$. C) $-12$. D) $9$. Show Answer Correct Answer: B) $-9$. 6. One weekend, Latoya and Tyler mowed lawns to earn spending money. They are paid as a team $ 13.50 an hour. They worked for 8 hours. Each received half the total earnings. If Latoya then spent $ 18 on a video game, how much money did she have left? A) $ 90. B) $ 108. C) $ 36. D) $ 54. Show Answer Correct Answer: C) $ 36. 7. When multiplying or dividing a negative and negative number your result will be ..... A) Positive. B) Negative. C) Depends on which number is bigger. D) None of the above. Show Answer Correct Answer: A) Positive. 8. Decimal representation of a rational number cannot be ..... A) Terminating. B) Non-terminating. C) Non-terminating and repeating. D) Non-terminating and non-repeating. Show Answer Correct Answer: D) Non-terminating and non-repeating. 9. To convert decimal number into binary number, divide the number by A) 8. B) 2. C) 10. D) None of the above. Show Answer Correct Answer: B) 2. 10. What are your counting numbers (1, 2, 3 ..... )? A) Rational Numbers. B) Whole Numbers. C) Natural Numbers. D) Irrational Numbers. Show Answer Correct Answer: C) Natural Numbers. 11. Which is the binary number? A) 10110$_{10}$. B) 10110$_{8}$. C) 10110$_{2}$. D) 10110$_{16}$. Show Answer Correct Answer: C) 10110$_{2}$. 12. Which of the following is NOT a hexadecimal number? A) AB. B) DE. C) BF. D) GC. Show Answer Correct Answer: D) GC. 13. The set of rational numbers includes all the following except ..... A) -42. B) 5/0. C) 0. D) 14.7. Show Answer Correct Answer: B) 5/0. 14. An irrational number between 1.5 and 1.6 is A) 1.56. B) 1.5151155111 . C) 1.61611611 . D) 1.51515151 . Show Answer Correct Answer: B) 1.5151155111 . 15. Chris decided to do his history homework a little bit each night. On the first night he did 1/5 of the homework, the second night he completed 1/4 of the homework, and the third night he worked 1/2 of the homework. How much of the homework has Chris completed? A) 1/3 or .33. B) 19/20 or .95. C) 1/10 or .1. D) 1/2 or .5. Show Answer Correct Answer: B) 19/20 or .95. 16. How do you write this number using words?1, 23, 004 A) One lakh twenty three thousand, forty-four. B) One lakh twenty three thousand, forty. C) One lakh twenty three thousand, four. D) One lakh twenty three thousand, four hundred. Show Answer Correct Answer: C) One lakh twenty three thousand, four. 17. The square root of which number is rational A) 11. B) 13. C) 7. D) 0.04. Show Answer Correct Answer: D) 0.04. 18. Valerie bought a 9 ft piece of ribbon from which she wants to cut into $^{2}$/$_{3}$ ft pieces. How many $^{2}$/$_{3}$ ft pieces can Valerie cut? A) 9. B) 6. C) 13. D) This is not possible. Show Answer Correct Answer: C) 13. 19. What is the hexadecimal equivalent of the binary number 1100 0101$_{2}$? A) C5$_{16}$. B) 3B$_{16}$. C) 342$_{16}$. D) 305$_{16}$. Show Answer Correct Answer: A) C5$_{16}$. 20. Largest two digit hexadecimal is A) FE. B) FD. C) FF. D) EF. Show Answer Correct Answer: C) FF. 21. Which domain would be most appropriate set to use for a function that predicts the number of household online-devices in terms of people in the household? A) Irrational numbers. B) Whole numbers. C) Rational numbers. D) Integers. Show Answer Correct Answer: B) Whole numbers. 22. $Solve:\\sqrt{36}+\sqrt{36}$ A) $\sqrt{6}$. B) $6$. C) $\sqrt{12}$. D) $12$. Show Answer Correct Answer: D) $12$. 23. Convert the fraction 7/10 to a decimal. A) 0.75. B) 0.7. C) 0.07. D) 1.0. Show Answer Correct Answer: B) 0.7. 24. The decimal equivalent of binary number 1011 is A) 11. B) 10. C) 13. D) 8. Show Answer Correct Answer: A) 11. 25. $7^{\frac{1}{2}}8^{\frac{1}{2}}$ A) $\left(56\right)^{\frac{1}{2}}$. B) $\left(28\right)^{\frac{1}{2}}$. C) $\left(15\right)^{\frac{1}{2}}$. D) $\left(42\right)^{\frac{1}{2}}$. Show Answer Correct Answer: A) $\left(56\right)^{\frac{1}{2}}$. 26. Is what type of number (click all the correct answers)? A) Rational. B) Irrational. C) Integer. D) Natural number. E) Whole number. Show Answer Correct Answer: A) Rational. 27. There are five people and thirty slices of pizza. If they share the pizza equally, how much will each person get? A) 7 slices. B) 6 slices. C) All the above. D) None of the above. Show Answer Correct Answer: B) 6 slices. 28. The distance a value is from zero is A) Integer. B) Absolute Value. C) Distance. D) Origin. Show Answer Correct Answer: B) Absolute Value. 29. Convert! 1101 in to Denary (Base 10). A) 13. B) 12. C) 15. D) 16. Show Answer Correct Answer: A) 13. 30. List the numbers from least to greatest:-1/2, 70%, 4/5, -7 A) -1/2, -7, 70%, 4/5. B) -7, -1/2, 4/5, 70%. C) -7, -1/2, 70%, 4/5. D) -1/2, 70%, 4/5, -7. Show Answer Correct Answer: C) -7, -1/2, 70%, 4/5. 31. To which category does the number-6 belong? A) Rational # Only. B) Whole # Only. C) Integer & Rational #. D) Integer Only. Show Answer Correct Answer: C) Integer & Rational #. 32. Convert! What is 23 as a Binary (Base 2) number? A) 01101. B) 11110. C) 10111. D) 10101. Show Answer Correct Answer: C) 10111. 33. Name the property illustrated:(7x4) x 5 = 7 x (4x5) A) Multiplicative Identity. B) Associative Property of Multiplication. C) Additive Identity. D) Associative Property of Addition. Show Answer Correct Answer: B) Associative Property of Multiplication. 34. If the ages of GOKUL and his father are in the ratio 5:2 and GOKUL's father is 40, how old is GOKUL? A) 16. B) 24. C) 30. D) 20. Show Answer Correct Answer: A) 16. 35. I have 8 7/9 of cookies. I have 4 friends. I want to share the cookies with each of my friends equally. How much will each friend get? A) 3 1/3. B) 89/36. C) 356/9. D) 3 11/36. Show Answer Correct Answer: D) 3 11/36. 36. $Simplify\\sqrt{16}$ A) -2. B) 4. C) 3. D) 2. Show Answer Correct Answer: B) 4. 37. Rationalize:1/7-2 A) 7 + 2/5. B) 7 + 2/4. C) 7 + 2/3. D) 7 + 2/7. Show Answer Correct Answer: C) 7 + 2/3. 38. What is the hexadecimal equivalent of the decimal number 255? A) FF. B) AA. C) CC. D) 00. Show Answer Correct Answer: A) FF. 39. Between two rational numbers A) There is exactly one rational number. B) There is only one natural number. C) There are infinitely many rational numbers. D) There are only rational numbers and no irrational numbers. Show Answer Correct Answer: C) There are infinitely many rational numbers. 40. Express 0.75 as a fraction in simplest form. A) 1/2. B) 2/3. C) 4/5. D) 3/4. Show Answer Correct Answer: D) 3/4. 41. Cups are sold 5 to a package and plates are sold 10 to a package. If you want to have the same number of each item for a party, what is the least number of packages of each you need to buy? A) 10. B) 20. C) 50. D) 30. Show Answer Correct Answer: A) 10. 42. Which of the following is a natural number? A) 7. B) 3.5. C) -2. D) 0. Show Answer Correct Answer: A) 7. 43. $\left[\left(\frac{5}{6}\right)^{\frac{1}{5}}\right]^{\frac{1}{6}}$ A) $\left(\frac{5}{6}\right)^{\frac{1}{5}\cdot\frac{1}{6}}$. B) $\left(\frac{5}{6}\right)^{\frac{1}{30}}$. C) $\frac{1}{\left[\left(\frac{5}{6}\right)^{\frac{1}{5}}\right]^{\frac{1}{6}}}$. D) $\left(\frac{6}{5}\right)^{\frac{1}{30}}$. Show Answer Correct Answer: A) $\left(\frac{5}{6}\right)^{\frac{1}{5}\cdot\frac{1}{6}}$. 44. There are 9 people at a party, each person wants pizza. Only 4/6 of a pizza is left. How much pizza will each person get if they split it evenly? A) 2/27. B) 4/15. C) 4/54. D) 36/6. Show Answer Correct Answer: A) 2/27. 45. $\frac{\sqrt{3xy^2}}{\sqrt{5xy^3}}$ A) $\frac{\sqrt{5y}}{5y}$. B) $\frac{\sqrt{15y}}{5y}$. C) $\frac{3\sqrt{5y}}{5y}$. D) $\frac{\sqrt{15y}}{y}$. Show Answer Correct Answer: B) $\frac{\sqrt{15y}}{5y}$. 46. Sarah and Emma went to Target, and spent a total of $ 94.16. If they split the bill, how much did each of them pay? A) $ 49.56. B) $ 46.24. C) $ 43.09. D) $ 47.08. Show Answer Correct Answer: D) $ 47.08. 47. Every Rational number is an Integer A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 48. What is the sum of 1/2 and 3/8? A) 3/4. B) 5/8. C) 1/4. D) 7/8. Show Answer Correct Answer: D) 7/8. 49. Determine the decimal equivalent of the signed binary number 11110100 in 1's complement. A) -12. B) 116. C) 128. D) 11. Show Answer Correct Answer: D) 11. 50. 2's complement of 11001011 is ..... A) 01010111. B) 00110101. C) 11010100. D) 11100010. Show Answer Correct Answer: B) 00110101. 51. Is the sum of $3\sqrt{2}$ $4\sqrt{2}$ A) Rational because the sum cannot be expressed as a fraction. B) Irrational because the sum cannot be expressed as a fraction. C) Irrational because the sum can be expressed as a fraction. D) Rational because the sum can be expressed as a fraction. Show Answer Correct Answer: B) Irrational because the sum cannot be expressed as a fraction. 52. Given:L= $\sqrt{2}$ $3\sqrt{3}$ $\sqrt{16}$ $\sqrt{9}$ A) $L+M$. B) $P+L$. C) $M\times N$. D) $N\times P$. Show Answer Correct Answer: D) $N\times P$. 53. 5 x (7 + 9) = (5 x 7) + (5 x 9) A) Distributive Property. B) Commutative Property. C) Multiplying Property. D) Associative Property. Show Answer Correct Answer: A) Distributive Property. 54. When converting binary to hexadecimal, in how many digits should the binary number be separated by? A) Two (2). B) Eight (8). C) Six (6). D) Four (4). Show Answer Correct Answer: D) Four (4). 55. $\frac{2}{\sqrt{3}}$ A) $\frac{2}{9}$. B) $\frac{\sqrt{3}}{3}$. C) $\frac{2}{3}$. D) $\frac{2\sqrt{3}}{3}$. Show Answer Correct Answer: D) $\frac{2\sqrt{3}}{3}$. 56. How should you read a binary number? A) From right to left. B) From top to bottom. C) From bottom to top. D) From left to right. Show Answer Correct Answer: A) From right to left. 57. Write as integer:Allyson owes $ 65 A) 65. B) -65. C) All the above. D) None of the above. Show Answer Correct Answer: B) -65. 58. Shana bought a hamburger for $ 4.25, two hot dogs for $ 2.50 each, a large order of fries for $ 2.95, and one medium soda for $ 2.15. If Shana paid with a $ 20.00 bill, how much change did she receive? A) $ 5.65. B) $ 11.85. C) $ 8.15. D) $ 14.35. Show Answer Correct Answer: A) $ 5.65. 59. How could this number be identified? (Select ALL the correct options)-4.5 A) Natural number. B) Integer. C) Rational number. D) Whole number. Show Answer Correct Answer: C) Rational number. 60. What type of number is 3.5555555 ..... A) Rational number. B) Irrational number. C) All the above. D) None of the above. Show Answer Correct Answer: A) Rational number. 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