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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 411 · 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. 1.43 + 12 × 3 − 15 =
  2. 2.6.5 × 9 =
  3. 3.Two tanks hold 105 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.How many factors does 19 have?
  5. 5.Find the LCM of 18 and 42.
  6. 6.Two tanks hold 45 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  7. 7.What percent of 250 is 160?
  8. 8.Arjun scored 6 marks out of 40 in a test. What percentage did Arjun score?
  9. 9.Find the HCF of 14 and 18.
  10. 10.Find the HCF of 104 and 39.
  11. 11.4/5 of 50 + 7 × 9 =
  12. 12.A car goes 16 km on 2 litres of petrol. How far can it go on 40 litres (in km)?
  13. 13.30% of a number is 153. What is the number?
  14. 14.Divide ₹315 between Saanvi and Isha in the ratio 4 : 5. How much does Saanvi get (in ₹)?
  15. 15.A hall floor is 210 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  16. 16.Find the LCM of 12, 6 and 2.
  17. 17.What is the smallest number you must add to 546 so that it divides exactly by 11?
  18. 18.Which is closest to 198 × 62? (Round each number first.) (a) 12000 (b) 1200 (c) 24000 (d) 120000
  19. 19.(8 + 20) × 6 − 15 =
  20. 20.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  21. 21.The HCF of two numbers is 6 and their LCM is 120. One of the numbers is 24. What is the other number?
  22. 22.What is the smallest number you must add to 387 so that it divides exactly by 6?
  23. 23.Round 23418 to the nearest thousand.
  24. 24.6 : 9 = 36 : ?
  25. 25.The HCF of two numbers is 4 and their LCM is 60. One of the numbers is 20. What is the other number?
  26. 26.Find the smallest number bigger than 15 that leaves a remainder of 7 when divided by 15, 10 or 9.
  27. 27.What is 5% of 240?
  28. 28.5 × (13 − 11) + 42 ÷ 7 =
  29. 29.Nisha scored 32 marks out of 80 in a test. What percentage did Nisha score?
  30. 30.1.7 × 9 =
  31. 31.Three temple bells ring every 8, 9 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.60 − 12 ÷ 3 × 9 =
  33. 33.Write 3/5 as a percent.
  34. 34.Find the LCM of 12, 8 and 10.
  35. 35.Round 6222 to the nearest hundred.
  36. 36.What is 5/8 of 88 km?
  37. 37.Three temple bells ring every 8, 30 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.Find the LCM of 10 and 6.
  39. 39.Which is closest to 403 + 95 + 905? (a) 1400 (b) 1600 (c) 1300 (d) 1500
  40. 40.1/4 × 5/6 =

Answer key

  1. 64
  2. 58.5
  3. 15
  4. 2
  5. 126
  6. 15
  7. 64
  8. 15
  9. 2
  10. 13
  11. 103
  12. 320
  13. 510
  14. 140
  15. 35
  16. 12
  17. 4
  18. 12000
  19. 153
  20. 18
  21. 30
  22. 3
  23. 23000
  24. 54
  25. 12
  26. 97
  27. 12
  28. 16
  29. 40
  30. 15.3
  31. 72
  32. 24
  33. 60
  34. 120
  35. 6200
  36. 55
  37. 120
  38. 30
  39. 1400
  40. 5/24

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