This quiz works best with JavaScript enabled. Home > Class 9 > 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 (25 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) 3/3. B) 3. C) 1/3. D) 3/3. Show Answer Correct Answer: A) 3/3. 3. To which category does 1.5 belong? A) Integer Only. B) Rational # Only. C) Whole # 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) 10. C) 12. D) 16. Show Answer Correct Answer: A) 8. 5. Carry out the division $\frac{36}{-4}$ A) $9$. B) $-9$. C) $-12$. D) $-\frac{3}{2}$. 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) $ 108. B) $ 54. C) $ 36. D) $ 90. 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$_{2}$. B) 10110$_{10}$. C) 10110$_{8}$. D) 10110$_{16}$. Show Answer Correct Answer: A) 10110$_{2}$. 12. Compare:-9 ..... 8 A) >. B) <. C) =. D) None of the above. Show Answer Correct Answer: B) <. 13. Which of the following is NOT a hexadecimal number? A) DE. B) AB. C) GC. D) BF. Show Answer Correct Answer: C) GC. 14. 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. 15. An irrational number between 1.5 and 1.6 is A) 1.56. B) 1.61611611 . C) 1.5151155111 . D) 1.51515151 . Show Answer Correct Answer: C) 1.5151155111 . 16. 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) 19/20 or .95. B) 1/2 or .5. C) 1/3 or .33. D) 1/10 or .1. Show Answer Correct Answer: A) 19/20 or .95. 17. 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. 18. The square root of which number is rational A) 7. B) 11. C) 0.04. D) 13. Show Answer Correct Answer: C) 0.04. 19. -5 x-8 A) -40. B) -13. C) -45. D) 40. Show Answer Correct Answer: D) 40. 20. 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) 13. B) 6. C) 9. D) This is not possible. Show Answer Correct Answer: A) 13. 21. What is the hexadecimal equivalent of the binary number 1100 0101$_{2}$? A) C5$_{16}$. B) 342$_{16}$. C) 3B$_{16}$. D) 305$_{16}$. Show Answer Correct Answer: A) C5$_{16}$. 22. Largest two digit hexadecimal is A) FE. B) FD. C) FF. D) EF. Show Answer Correct Answer: C) FF. 23. 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) Integers. B) Whole numbers. C) Irrational numbers. D) Rational numbers. Show Answer Correct Answer: B) Whole numbers. 24. $Solve:\\sqrt{36}+\sqrt{36}$ A) $12$. B) $\sqrt{6}$. C) $6$. D) $\sqrt{12}$. Show Answer Correct Answer: A) $12$. 25. Convert the fraction 7/10 to a decimal. A) 0.7. B) 1.0. C) 0.75. D) 0.07. Show Answer Correct Answer: A) 0.7. 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