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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 236 · 40 questions
TalentJR

The method (Spot the type): Read the question and name the topic: HCF/LCM, fraction, ratio, percent … Use that lesson’s method and write each step. Check: is the answer sensible in size and units?

NameDateTime takenScore ___ / 40
  1. 1.Round 61.24 to one decimal place. =
  2. 2.12 painters can paint a school in 14 days. How many days would 14 painters take, working at the same speed?
  3. 3.What is the smallest number you must add to 714 so that it divides exactly by 4?
  4. 4.(13 + 14) × 5 − 3 =
  5. 5.How many factors does 60 have?
  6. 6.20% of a number is 43. What is the number?
  7. 7.Divide ₹280 between Tara and Aditya in the ratio 2 : 5. How much does Tara get (in ₹)?
  8. 8.Vivaan scored 3 marks out of 25 in a test. What percentage did Vivaan score?
  9. 9.Which of these numbers divides exactly by 9? (a) 3823 (b) 5620 (c) 9671 (d) 3186
  10. 10.Which is closest to 796 × 22? (Round each number first.) (a) 16000 (b) 1600 (c) 32000 (d) 160000
  11. 11.9 × (30 − 28) + 8 ÷ 2 =
  12. 12.Round 31.17 to one decimal place. =
  13. 13.2 painters can paint a school in 8 days. How many days would 4 painters take, working at the same speed?
  14. 14.Two tanks hold 100 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  15. 15.How many factors does 82 have?
  16. 16.Find the LCM of 3, 5 and 8.
  17. 17.8 : 10 = 40 : ?
  18. 18.3/5 + 1/2 =
  19. 19.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  20. 20.Find the LCM of 6, 5 and 9.
  21. 21.1/2 + 1/9 =
  22. 22.A hostel has enough food for 11 students for 26 days. How many days will the same food last for 22 students?
  23. 23.Find the LCM of 6, 3 and 10.
  24. 24.Find the HCF of 6 and 4.
  25. 25.Find the LCM of 6, 4 and 12.
  26. 26.Which is closest to 695 + 501 + 301? (a) 1400 (b) 1700 (c) 1600 (d) 1500
  27. 27.150% of a number is 690. What is the number?
  28. 28.7.04 + 9.9 =
  29. 29.How many factors does 38 have?
  30. 30.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 16. What is the other number?
  31. 31.Karan takes 36 seconds and Vivaan takes 90 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  32. 32.What is 4/5 of 80 kg?
  33. 33.What is 12% of 200?
  34. 34.If 6 notebooks cost ₹24, how much do 17 notebooks cost (in ₹)?
  35. 35.Round 59.68 to one decimal place. =
  36. 36.What is 5/6 of 30 litres?
  37. 37.Kabir scored 40 marks out of 50 in a test. What percentage did Kabir score?
  38. 38.The ratio of boys to girls in a class is 8 : 7. There are 64 boys. How many girls are there?
  39. 39.Find the HCF of 12 and 28.
  40. 40.What is the smallest number you must take away from 996 so that it divides exactly by 9?

Answer key

  1. 61.2
  2. 12
  3. 2
  4. 132
  5. 12
  6. 215
  7. 80
  8. 12
  9. 3186
  10. 16000
  11. 22
  12. 31.2
  13. 4
  14. 25
  15. 4
  16. 120
  17. 50
  18. 11/10
  19. 20
  20. 90
  21. 11/18
  22. 13
  23. 30
  24. 2
  25. 12
  26. 1500
  27. 460
  28. 16.94
  29. 4
  30. 56
  31. 180
  32. 64
  33. 24
  34. 68
  35. 59.7
  36. 25
  37. 80
  38. 56
  39. 4
  40. 6

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