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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 245 · 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. 1.4/11 + 1/3 =
  2. 2.4/6 + 2/7 =
  3. 3.What is 10% of 150?
  4. 4.23 + 9 × 6 − 15 =
  5. 5.31.2 ÷ 8 =
  6. 6.1/2 − 3/8 =
  7. 7.What is the smallest number you must add to 541 so that it divides exactly by 4?
  8. 8.Find the LCM of 10, 9 and 6.
  9. 9.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 3, 9 or 6.
  10. 10.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  11. 11.How many factors does 61 have?
  12. 12.A hall floor is 125 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.6 × (11 − 8) + 6 ÷ 3 =
  14. 14.21 + 12 × 7 − 16 =
  15. 15.Find the HCF of 54 and 24.
  16. 16.The HCF of two numbers is 6 and their LCM is 84. One of the numbers is 42. What is the other number?
  17. 17.The HCF of two numbers is 4 and their LCM is 84. One of the numbers is 28. What is the other number?
  18. 18.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  19. 19.If 4 mangoes cost ₹16, how much do 16 mangoes cost (in ₹)?
  20. 20.1/6 of 12 + 6 × 2 =
  21. 21.Round 18259 to the nearest ten.
  22. 22.Which is closest to 398 × 78? (Round each number first.) (a) 3200 (b) 64000 (c) 320000 (d) 32000
  23. 23.Write 13/20 as a percent.
  24. 24.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  25. 25.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  26. 26.Find the LCM of 25 and 20.
  27. 27.Three temple bells ring every 12, 6 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.12 : 8 = 96 : ?
  29. 29.3 : 11 = 27 : ?
  30. 30.Three temple bells ring every 15, 18 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.How many factors does 94 have?
  32. 32.Find the HCF of 6 and 8.
  33. 33.(5 + 6) × 6 − 19 =
  34. 34.7.5 ÷ 5 =
  35. 35.13 + 12 × 10 − 13 =
  36. 36.Find the LCM of 6 and 5.
  37. 37.A car goes 264 km on 11 litres of petrol. How far can it go on 3 litres (in km)?
  38. 38.36 − 48 ÷ 8 × 2 =
  39. 39.Find the LCM of 15 and 40.
  40. 40.Three temple bells ring every 10, 5 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 23/33
  2. 20/21
  3. 15
  4. 62
  5. 3.9
  6. 1/8
  7. 3
  8. 90
  9. 19
  10. 50
  11. 2
  12. 10
  13. 20
  14. 89
  15. 6
  16. 12
  17. 12
  18. 28
  19. 64
  20. 14
  21. 18260
  22. 32000
  23. 65
  24. 16
  25. 144
  26. 100
  27. 60
  28. 64
  29. 99
  30. 90
  31. 4
  32. 2
  33. 47
  34. 1.5
  35. 120
  36. 30
  37. 72
  38. 24
  39. 120
  40. 90

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