This quiz works best with JavaScript enabled. Home > Cbse > Class 9 > Mathematics > Number Systems > Class 9 Maths Chapter 1 Number Systems – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Maths Chapter 1 Number Systems Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Benil and John are trying to find the LCM of 9 and 15 for their math project. A) 60. B) 75. C) 30. D) 45. Show Answer Correct Answer: D) 45. 2. An entire chocolate cake has 5, 320 calories. If the cake is equally divided into 14 pieces, how many calories are in each piece? A) 38. B) 2.8. C) 380. D) 280. Show Answer Correct Answer: C) 380. 3. The sum of the two BCD numbers, 0011 + 0011, is ..... A) 0110. B) 0111. C) 0011. D) 1100. Show Answer Correct Answer: A) 0110. 4. Say 'TRUE' or 'FALSE'There are finite rational numbers between any two given rational numbers. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 5. Convert the decimal number 10 to binary. A) 1011. B) 1100. C) 1001. D) 1010. Show Answer Correct Answer: D) 1010. 6. A relay race lasts 5.8 miles. The relay team has 4 runners. If each runner goes the same distance, how far does each team member run? A) 1.35 miles. B) 1.55 miles. C) 1.45 miles. D) 1.65 miles. Show Answer Correct Answer: C) 1.45 miles. 7. Octal equivalent of the binary 110101 A) 65. B) 64. C) 54. D) 45. Show Answer Correct Answer: A) 65. 8. If the ages of a mother and daughter are in the ratio 7:3 and the mother is 42, how old is the daughter? A) 21. B) 18. C) 12. D) 14. Show Answer Correct Answer: B) 18. 9. Perform binary addition:101101 + 011011 =? A) 1010100. B) 011010. C) 1001000. D) 101110. Show Answer Correct Answer: C) 1001000. 10. The Thomas Jefferson Memorial is on 18.36 acres of land and the Franklin Roosevelt Memorial is on 7.5 acres of land. How many more acres does the Jefferson Memorial have than the Roosevelt Memorial? A) 17.61 acres. B) 10.86 acres. C) 9.86 acres. D) 11.31 acres. Show Answer Correct Answer: B) 10.86 acres. 11. Convert the binary number 1100 to Gray code. A) 0011. B) 1010. C) 1001. D) 1100. Show Answer Correct Answer: B) 1010. 12. To which category does the number 8 belong? A) Whole # Only. B) All of These. C) Rational # Only. D) Integer Only. Show Answer Correct Answer: B) All of These. 13. PRATHAP, ASHER, and NITHIN are trying to find the HCF of the numbers they collected from their project:45, 60, and 75. A) 25. B) 10. C) 15. D) 20. Show Answer Correct Answer: C) 15. 14. Which of the following numbers is irrational? A) 0.333 . B) 0.101001000100001 . C) 22/7. D) 0.123123123 . Show Answer Correct Answer: B) 0.101001000100001 . 15. Which of the following is not a part of the set of rational numbers? A) 0. B) -42. C) 14.7. D) 5/0. Show Answer Correct Answer: D) 5/0. 16. Name the number system that best describes the situation.Number of instagram followers. A) Real Numbers. B) Whole Numbers. C) Integers. D) Natural Numbers. E) Rational Numbers. Show Answer Correct Answer: B) Whole Numbers. 17. Mrs. Sheehan took Griffin to the pet store with an allowance of $ 56.00. If he purchased 16.52 pounds of dog treats with his allowance, what was the cost per pound? A) 29 Cents. B) 30 Cents. C) 27 cents. D) 28 Cents. Show Answer Correct Answer: B) 30 Cents. 18. Convert binary to octal:$\left(110110001010\right)_2$ A) $\left(4532\right)_8$. B) $\left(6745\right)_8$. C) $\left(5512\right)_8$. D) $\left(6612\right)_8$. Show Answer Correct Answer: D) $\left(6612\right)_8$. 19. If the decimal number is a fraction then its binary equivalent is obtained by ..... the number continuously by 2. A) Multiplying. B) Subtracting. C) Adding. D) Dividing. Show Answer Correct Answer: A) Multiplying. 20. What is the additive inverse of $7$ $Z_{16}$ A) -7. B) $\frac{1}{7}$. C) 9. D) 8. Show Answer Correct Answer: C) 9. 21. What is the decimal expansion of 1/3? A) 0.333. B) 0.3. C) 0.33333. D) 0.333 . Show Answer Correct Answer: D) 0.333 . 22. To which category does-3.4 belong? A) Integer Only. B) Whole # Only. C) Rational # Only. D) Integer & Rational # Only. Show Answer Correct Answer: C) Rational # Only. 23. Nik brought a bag of candy to school. He started with 50 pieces, but gave out 15 pieces to EACH of his TWO friends. His nice math teacher gave Nik 3 pieces of candy. How much does he have now? A) 23 pieces. B) 0 pieces. C) 10 pieces. D) 37 pieces. Show Answer Correct Answer: A) 23 pieces. 24. To which category does-6.4 belong? A) Whole #. B) Integer & Rational. C) Rational #. D) Integer. Show Answer Correct Answer: C) Rational #. 25. John and David are siblings whose ages are in the ratio 3:4. If David, the older sibling, is 28 years old, how old is John? A) 30. B) 18. C) 21. D) 24. Show Answer Correct Answer: C) 21. 26. The product of $\sqrt{576}$ $\sqrt{684}$ A) Irrational because both factors are irrational. B) Rational because both factors are rational. C) Irrational because one factor is irrational. D) Rational because one factor is rational. Show Answer Correct Answer: C) Irrational because one factor is irrational. 27. Calculate the LCM of 12 and 18. A) 24. B) 30. C) 36. D) 54. Show Answer Correct Answer: C) 36. 28. Which of the following can logically be an octal number? A) 9. B) 8. C) 16. D) 18. Show Answer Correct Answer: C) 16. 29. Check all classifications for the number:$\frac{1}{2}$ A) Whole Number. B) Irrational Number. C) Natural Number. D) Rational Number. E) Integers. Show Answer Correct Answer: D) Rational Number. 30. Find the absolute value of-99 A) -99. B) 99. C) All the above. D) None of the above. Show Answer Correct Answer: B) 99. 31. Ones complement of 10101 A) 11100. B) 10100. C) 01011. D) 01010. Show Answer Correct Answer: D) 01010. 32. Which is typically the longest:bit, byte, nibble, word? A) Byte. B) Word. C) Bit. D) Nibble. Show Answer Correct Answer: B) Word. 33. What is the definition of integers? A) Numbers you count on your fingers and toes. B) Natural numbers and zero. C) Whole numbers and their opposites. D) Terminating or repeating decimals. Show Answer Correct Answer: C) Whole numbers and their opposites. 34. Which one is the largest? A) 1/2. B) 5/6. C) 3/8. D) 3/4. Show Answer Correct Answer: B) 5/6. 35. Integers are ..... A) The set of positive numbers, their opposites, and zero. B) Any numbers, fractions, decimals, and integers that do not have zero as their demoniator. C) All positive numbers, no fractions or decimals. D) The counting numbers, with no negatives, decimals, or zero. Show Answer Correct Answer: A) The set of positive numbers, their opposites, and zero. 36. What is the reciprocal of $^{3}$/$_{4}$? A) $^{4}$/$_{3}$. B) $^{3}$/$_{4}$. C) $^{1}$/$_{4}$ lb. D) None of the above. Show Answer Correct Answer: A) $^{4}$/$_{3}$. 37. At the beginning of the week, the temperature was 14 degrees Fahrenheit. During the week, it decreased by 25 degrees Fahrenheit. What was the temperature by the end of the week? A) 39 degrees F. B) -39 degrees F. C) -11 degrees F. D) 11 degrees F. Show Answer Correct Answer: C) -11 degrees F. 38. Computers only understand machine language, which uses which number system? A) Binary. B) Decimal. C) Octal. D) Hexadecimal. Show Answer Correct Answer: A) Binary. 39. Lincoln Vitamin Shop sold equal quantities of Vitamin A and Vitamin D supplements this morning, even though the Vitamin A supplements come in packs of 4 and the Vitamin D supplements in packs of 15. What is the smallest number of each type that the store could have sold? A) 15. B) 60. C) 45. D) 30. Show Answer Correct Answer: B) 60. 40. The product of two irrational number is always ..... A) An integer. B) Sometimes rational, sometimes irrational. C) A rational number. D) An irrational number. Show Answer Correct Answer: B) Sometimes rational, sometimes irrational. 41. What is the difference between binary coding and binary-coded decimal?. A) Binary coding is pure binary. B) BCD has no decimal format. C) Binary coding has a decimal format. D) BCD is pure binary. Show Answer Correct Answer: A) Binary coding is pure binary. 42. The decimal expansion of a rational number is either: A) Terminating. B) Non-terminating recurring. C) Both A and B. D) None. Show Answer Correct Answer: C) Both A and B. 43. What is 3/10 $\div$ A) 3/20. B) 3/5. C) 12/20. D) 6/40. Show Answer Correct Answer: B) 3/5. 44. $Solve:\\sqrt{\alpha^2}\times\sqrt{\alpha^2}$ A) $2\alpha$. B) $\alpha^2$. C) $\alpha$. D) $\sqrt{\alpha^2}$. Show Answer Correct Answer: B) $\alpha^2$. 45. GOKUL is trying to determine if a number he found is divisible by 4. What is the divisibility rule for 4? A) A number is divisible by 4 if the sum of its digits is divisible by 4. B) A number is divisible by 4 if its last digit is 0. C) A number is divisible by 4 if it is even. D) A number is divisible by 4 if its last two digits form a number that is divisible by 4. Show Answer Correct Answer: D) A number is divisible by 4 if its last two digits form a number that is divisible by 4. 46. If David is 15 years old now, how old will he be in 10 years? A) 25. B) 30. C) 15. D) 20. Show Answer Correct Answer: A) 25. 47. The Gray code for decimal 7 is A) 0100. B) 0101. C) 1011. D) 0111. Show Answer Correct Answer: A) 0100. 48. To which category does the number-3 belong? A) Rational # Only. B) Integer Only. C) Whole # Only. D) Integer & Rational. Show Answer Correct Answer: D) Integer & Rational. 49. Ms. Sublett's math class is putting three numbers (0.3, 1/4, and 20%) in order from least to greatest. Which answer is correct? A) 0.3, 20%, 1/4. B) 0.3, 1/4, 20%. C) 1/4, 20%, 0.3. D) 20%, 1/4, 0.3. Show Answer Correct Answer: D) 20%, 1/4, 0.3. 50. Jane has 18 juice boxes, 24 bags of peanuts and 36 apples. She wants to make snack bags with the same number of each thing in each bag. What is the greatest number of snack bags Jane can make. A) 10. B) 8. C) 6. D) 4. Show Answer Correct Answer: C) 6. 51. Name the number system that best describes the situation.Number of eggs a chicken lays. A) Natural Numbers. B) Whole Numbers. C) Integers. D) Irrational Numbers. E) Rational Numbers. Show Answer Correct Answer: B) Whole Numbers. 52. Which list is ordered from least to greatest? A) 10.76, 10.076, 11.074, 10.176. B) 11.074, 10.76, 10.176, 10.076. C) 10.076, 10.76, 10.176, 11.074. D) 10.076, 10.176, 10.76, 11.074. Show Answer Correct Answer: D) 10.076, 10.176, 10.76, 11.074. 53. Complete the sequence: ..... , 32, 16, 8, 4, 2, 1 A) 64. B) 48. C) 56. D) 40. Show Answer Correct Answer: A) 64. 54. A store sells self-serve frozen yogurt sundaes. The function C(w) represents the cost, in dollars, of a sundae weighting w ounces. An appropriate domain for the function would be A) Rational numbers. B) Nonnegative integers. C) Nonnegative rational numbers. D) Integers. Show Answer Correct Answer: C) Nonnegative rational numbers. 55. Convert decimal 31 to hexadecimal A) 1F. B) EF. C) FE. D) 1E. Show Answer Correct Answer: A) 1F. 56. In the double dabble method of decimal to binary conversion the result is obtained from A) Divisor. B) Remainder. C) Quotient. D) Dividend. Show Answer Correct Answer: B) Remainder. 57. Carlos uses a cleaner after working in his garage. The bottle contains 64.2 mL of cleaner. He used 5.8 mL of the cleaner on Monday. On Tuesday, he used half of the remaining cleaner on a chemical spill. On Wednesday, he used 3.9 mL of the cleaner in the bottle. How many mL of cleaner did Carlos have left on Thursday? A) 12.15. B) 25.3. C) 29.2. D) 58.4. Show Answer Correct Answer: B) 25.3. 58. Evaluate:(3 + 2)(3-2) A) 1. B) 5. C) 9. D) 7. Show Answer Correct Answer: D) 7. 59. What is the GCF of 4 and 12? A) 3. B) 6. C) 4. D) 1. Show Answer Correct Answer: C) 4. 60. + (-1.7) x (-3.6) A) 8.43. B) -2.196. C) -3.81. D) -8.43. Show Answer Correct Answer: A) 8.43. ← PreviousNext →Related QuizzesMathematics QuizzesClass 9 QuizzesClass 9 Maths Chapter 1 Number Systems Quiz 1Class 9 Maths Chapter 1 Number Systems Quiz 2Class 9 Maths Chapter 1 Number Systems Quiz 3Class 9 Maths Chapter 1 Number Systems Quiz 5Class 9 Maths Chapter 1 Number Systems Quiz 6 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books