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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 629 · 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. 1.30% of a number is 15. What is the number?
  2. 2.If 8 pens cost ₹384, how much do 7 pens cost (in ₹)?
  3. 3.Find the HCF of 60 and 50.
  4. 4.Rahul scored 48 marks out of 80 in a test. What percentage did Rahul score?
  5. 5.5 × (21 − 19) + 56 ÷ 7 =
  6. 6.1/3 × 1/5 =
  7. 7.Two tanks hold 10 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  8. 8.24 + 7 × 5 − 6 =
  9. 9.Which is closest to 300 + 301 + 501? (a) 1200 (b) 1300 (c) 1000 (d) 1100
  10. 10.What is 1/2 of 46 kg?
  11. 11.Which is closest to 604 × 88? (Round each number first.) (a) 5400 (b) 54000 (c) 108000 (d) 540000
  12. 12.What is 2/5 of 130 kg?
  13. 13.How many factors does 24 have?
  14. 14.How many factors does 42 have?
  15. 15.42 ÷ 7 × 4 + 26 =
  16. 16.Three temple bells ring every 5, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.Find the LCM of 4 and 6.
  18. 18.Find the LCM of 10, 5 and 6.
  19. 19.Write 6/25 as a percent.
  20. 20.Which of these numbers divides exactly by 3? (a) 1361 (b) 5652 (c) 1084 (d) 7639
  21. 21.Find the LCM of 21 and 18.
  22. 22.Which is closest to 799 × 22? (Round each number first.) (a) 16000 (b) 32000 (c) 160000 (d) 1600
  23. 23.Two tanks hold 250 litres and 450 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.2/3 + 1/2 =
  25. 25.Find the third proportional to 5 and 20 (that is, 5 : 20 = 20 : ?).
  26. 26.30% of a number is 69. What is the number?
  27. 27.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 9, 4 or 10.
  28. 28.Which is closest to 701 × 50? (Round each number first.) (a) 35000 (b) 70000 (c) 350000 (d) 3500
  29. 29.If 8 kg of rice costs ₹184, how many kg can you buy for ₹207?
  30. 30.How many factors does 35 have?
  31. 31.Three temple bells ring every 4, 6 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.(13 + 10) × 6 − 27 =
  33. 33.Which is closest to 196 × 30? (Round each number first.) (a) 600 (b) 12000 (c) 6000 (d) 60000
  34. 34.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  35. 35.Ananya takes 50 seconds and Diya takes 40 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?
  36. 36.2 : 3 = 16 : ?
  37. 37.42 − 48 ÷ 6 × 2 =
  38. 38.(11 + 10) × 7 − 2 =
  39. 39.What is the smallest number you must add to 536 so that it divides exactly by 9?
  40. 40.Which is closest to 596 × 72? (Round each number first.) (a) 420000 (b) 42000 (c) 84000 (d) 4200

Answer key

  1. 50
  2. 336
  3. 10
  4. 60
  5. 18
  6. 1/15
  7. 5
  8. 53
  9. 1100
  10. 23
  11. 54000
  12. 52
  13. 8
  14. 8
  15. 50
  16. 40
  17. 12
  18. 30
  19. 24
  20. 5652
  21. 126
  22. 16000
  23. 50
  24. 7/6
  25. 80
  26. 230
  27. 181
  28. 35000
  29. 9
  30. 4
  31. 24
  32. 111
  33. 6000
  34. 32
  35. 200
  36. 24
  37. 26
  38. 145
  39. 4
  40. 42000

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