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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 90 · 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.Which is closest to 898 × 79? (Round each number first.) (a) 72000 (b) 7200 (c) 144000 (d) 720000
  2. 2.Find the LCM of 14, 8 and 7.
  3. 3.Which is closest to 502 × 89? (Round each number first.) (a) 450000 (b) 4500 (c) 45000 (d) 90000
  4. 4.20 − 25 ÷ 5 × 2 =
  5. 5.The HCF of two numbers is 3 and their LCM is 120. One of the numbers is 24. What is the other number?
  6. 6.Which is closest to 2400 ÷ 41? (a) 600 (b) 60 (c) 30 (d) 120
  7. 7.Find the LCM of 36 and 16.
  8. 8.5 × (20 − 14) + 4 ÷ 2 =
  9. 9.Two tanks hold 15 litres and 10 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  10. 10.Find the smallest number bigger than 8 that leaves a remainder of 3 when divided by 5, 8 or 4.
  11. 11.A hostel has enough food for 12 students for 4 days. How many days will the same food last for 4 students?
  12. 12.Divide ₹590 between Dev and Nisha in the ratio 7 : 3. How much does Dev get (in ₹)?
  13. 13.8.88 + 5.6 =
  14. 14.Which is closest to 397 × 19? (Round each number first.) (a) 80000 (b) 800 (c) 8000 (d) 16000
  15. 15.If 3 kg of rice costs ₹180, how many kg can you buy for ₹720?
  16. 16.Round 40.18 to one decimal place. =
  17. 17.What is 1/2 of 56 litres?
  18. 18.Which is closest to 605 + 696 + 697? (a) 2000 (b) 2100 (c) 2200 (d) 1900
  19. 19.What is the smallest number you must take away from 923 so that it divides exactly by 11?
  20. 20.Which of these numbers divides exactly by 3? (a) 4156 (b) 6109 (c) 2792 (d) 3318
  21. 21.Which of these numbers divides exactly by 9? (a) 8386 (b) 9707 (c) 7929 (d) 9796
  22. 22.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 8 or 4.
  23. 23.Divide ₹114 between Pooja and Vivaan in the ratio 2 : 1. How much does Pooja get (in ₹)?
  24. 24.If 7 kg of rice costs ₹231, how many kg can you buy for ₹66?
  25. 25.39 − 64 ÷ 8 × 2 =
  26. 26.If 4 mangoes cost ₹112, how much do 16 mangoes cost (in ₹)?
  27. 27.6 ÷ 3 × 5 + 27 =
  28. 28.If 11 erasers cost ₹429, how much do 16 erasers cost (in ₹)?
  29. 29.Divide ₹440 between Kabir and Dev in the ratio 1 : 9. How much does Kabir get (in ₹)?
  30. 30.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  31. 31.Find the LCM of 2, 4 and 11.
  32. 32.20 + 10 × 7 − 9 =
  33. 33.If 11 kites cost ₹110, how much do 3 kites cost (in ₹)?
  34. 34.Divide ₹130 between Rohan and Nisha in the ratio 1 : 9. How much does Rohan get (in ₹)?
  35. 35.Round 6708 to the nearest thousand.
  36. 36.Three temple bells ring every 4, 12 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  37. 37.4 : 8 = 16 : ?
  38. 38.How many factors does 72 have?
  39. 39.What percent of 500 is 170?
  40. 40.2.6 × 7 =

Answer key

  1. 72000
  2. 56
  3. 45000
  4. 10
  5. 15
  6. 60
  7. 144
  8. 32
  9. 5
  10. 43
  11. 12
  12. 413
  13. 14.48
  14. 8000
  15. 12
  16. 40.2
  17. 28
  18. 2000
  19. 10
  20. 3318
  21. 7929
  22. 41
  23. 76
  24. 2
  25. 23
  26. 448
  27. 37
  28. 624
  29. 44
  30. 225
  31. 44
  32. 81
  33. 30
  34. 13
  35. 7000
  36. 36
  37. 32
  38. 12
  39. 34
  40. 18.2

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