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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 520 · 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.A car goes 225 km on 9 litres of petrol. How far can it go on 6 litres (in km)?
  2. 2.If 4 kg of rice costs ₹208, how many kg can you buy for ₹572?
  3. 3.Which is closest to 903 × 79? (Round each number first.) (a) 7200 (b) 144000 (c) 720000 (d) 72000
  4. 4.Find the LCM of 14 and 12.
  5. 5.Find the HCF of 45 and 75.
  6. 6.3/7 − 3/9 =
  7. 7.How many factors does 67 have?
  8. 8.The HCF of two numbers is 6 and their LCM is 144. One of the numbers is 48. What is the other number?
  9. 9.If 4 cricket balls cost ₹208, how much do 19 cricket balls cost (in ₹)?
  10. 10.Which is closest to 1607 ÷ 41? (a) 400 (b) 20 (c) 40 (d) 80
  11. 11.Find the LCM of 4, 3 and 9.
  12. 12.What is the smallest number you must take away from 628 so that it divides exactly by 6?
  13. 13.Find the LCM of 14 and 10.
  14. 14.How many factors does 62 have?
  15. 15.How many factors does 100 have?
  16. 16.Find the LCM of 9, 2 and 4.
  17. 17.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  18. 18.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  19. 19.Write 1/2 as a percent.
  20. 20.Find the smallest number bigger than 8 that leaves a remainder of 1 when divided by 5, 3 or 8.
  21. 21.4 : 10 = 16 : ?
  22. 22.55 ÷ 5 × 5 + 14 =
  23. 23.What is 60% of 250?
  24. 24.29 − 8 ÷ 2 × 7 =
  25. 25.Which is closest to 802 × 71? (Round each number first.) (a) 56000 (b) 560000 (c) 5600 (d) 112000
  26. 26.Find the LCM of 36 and 42.
  27. 27.Find the LCM of 7 and 8.
  28. 28.Which is closest to 2001 ÷ 49? (a) 80 (b) 400 (c) 40 (d) 20
  29. 29.Round 2806 to the nearest thousand.
  30. 30.4/6 − 3/5 =
  31. 31.A hostel has enough food for 3 students for 12 days. How many days will the same food last for 2 students?
  32. 32.What is 60% of 85?
  33. 33.Round 11381 to the nearest ten.
  34. 34.What is the smallest number you must add to 990 so that it divides exactly by 7?
  35. 35.Round 22666 to the nearest hundred.
  36. 36.Find the HCF of 42 and 56.
  37. 37.9 painters can paint a school in 23 days. How many days would 23 painters take, working at the same speed?
  38. 38.Three temple bells ring every 4, 8 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.15% of a number is 3. What is the number?
  40. 40.Three temple bells ring every 8, 12 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 150
  2. 11
  3. 72000
  4. 84
  5. 15
  6. 2/21
  7. 2
  8. 18
  9. 988
  10. 40
  11. 36
  12. 4
  13. 70
  14. 4
  15. 9
  16. 36
  17. 100
  18. 72
  19. 50
  20. 121
  21. 40
  22. 69
  23. 150
  24. 1
  25. 56000
  26. 252
  27. 56
  28. 40
  29. 3000
  30. 1/15
  31. 18
  32. 51
  33. 11380
  34. 4
  35. 22700
  36. 14
  37. 9
  38. 24
  39. 20
  40. 120

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