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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 508 · 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.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 15, 5 or 12.
  2. 2.Which is closest to 196 × 81? (Round each number first.) (a) 1600 (b) 160000 (c) 16000 (d) 32000
  3. 3.1.96 + 2.9 =
  4. 4.How many factors does 21 have?
  5. 5.Which is closest to 703 × 29? (Round each number first.) (a) 210000 (b) 42000 (c) 2100 (d) 21000
  6. 6.Which of these numbers divides exactly by 3? (a) 7031 (b) 8352 (c) 6577 (d) 8386
  7. 7.17 + 11 × 3 − 10 =
  8. 8.Which is closest to 592 ÷ 19? (a) 15 (b) 300 (c) 60 (d) 30
  9. 9.Which is closest to 698 × 28? (Round each number first.) (a) 42000 (b) 21000 (c) 210000 (d) 2100
  10. 10.How many factors does 97 have?
  11. 11.Which is closest to 592 ÷ 29? (a) 200 (b) 10 (c) 40 (d) 20
  12. 12.The HCF of two numbers is 5 and their LCM is 200. One of the numbers is 25. What is the other number?
  13. 13.38 − 8 ÷ 4 × 6 =
  14. 14.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  15. 15.If 5 kg of rice costs ₹430, how many kg can you buy for ₹258?
  16. 16.Three temple bells ring every 18, 12 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.3/4 of 44 + 7 × 4 =
  18. 18.4 : 11 = 8 : ?
  19. 19.15.4 ÷ 7 =
  20. 20.A car goes 96 km on 6 litres of petrol. How far can it go on 23 litres (in km)?
  21. 21.Two tanks hold 70 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  22. 22.35 + 11 × 7 − 4 =
  23. 23.What is the smallest number you must take away from 938 so that it divides exactly by 6?
  24. 24.What is the smallest number you must take away from 287 so that it divides exactly by 11?
  25. 25.The HCF of two numbers is 3 and their LCM is 216. One of the numbers is 27. What is the other number?
  26. 26.Which is closest to 396 + 600 + 203? (a) 1200 (b) 1100 (c) 1400 (d) 1300
  27. 27.Three temple bells ring every 15, 5 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.Find the HCF of 27 and 63.
  29. 29.2/3 × 7/9 =
  30. 30.Find the LCM of 6, 4 and 7.
  31. 31.3/7 of 35 + 2 × 5 =
  32. 32.What is 1/4 of ₹44?
  33. 33.Find the LCM of 7, 6 and 14.
  34. 34.4/12 + 3/4 =
  35. 35.A hall floor is 80 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  36. 36.Which of these numbers divides exactly by 8? (a) 7933 (b) 5793 (c) 9872 (d) 1986
  37. 37.33 + 3 × 5 − 17 =
  38. 38.Find the LCM of 35 and 25.
  39. 39.Find the LCM of 3, 14 and 2.
  40. 40.Divide ₹517 between Karan and Isha in the ratio 9 : 2. How much does Karan get (in ₹)?

Answer key

  1. 64
  2. 16000
  3. 4.86
  4. 4
  5. 21000
  6. 8352
  7. 40
  8. 30
  9. 21000
  10. 2
  11. 20
  12. 40
  13. 26
  14. 150
  15. 3
  16. 72
  17. 61
  18. 22
  19. 2.2
  20. 368
  21. 10
  22. 108
  23. 2
  24. 1
  25. 24
  26. 1200
  27. 60
  28. 9
  29. 14/27
  30. 84
  31. 25
  32. 11
  33. 42
  34. 13/12
  35. 12
  36. 9872
  37. 31
  38. 175
  39. 42
  40. 423

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