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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 470 · 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.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 56. What is the other number?
  2. 2.Which of these numbers divides exactly by 3? (a) 9753 (b) 5531 (c) 2420 (d) 8578
  3. 3.What percent of 500 is 310?
  4. 4.Which is closest to 897 × 31? (Round each number first.) (a) 270000 (b) 27000 (c) 54000 (d) 2700
  5. 5.If 7 kg of rice costs ₹350, how many kg can you buy for ₹100?
  6. 6.The HCF of two numbers is 7 and their LCM is 70. One of the numbers is 35. What is the other number?
  7. 7.6/9 × 3/4 =
  8. 8.Three temple bells ring every 12, 30 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.Divide ₹448 between Isha and Nisha in the ratio 9 : 7. How much does Isha get (in ₹)?
  10. 10.Two tanks hold 120 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.Find the HCF of 55 and 33.
  12. 12.Find the HCF of 28 and 63.
  13. 13.Find the LCM of 14, 4 and 5.
  14. 14.Find the LCM of 36 and 16.
  15. 15.Round 42232 to the nearest thousand.
  16. 16.A hostel has enough food for 11 students for 15 days. How many days will the same food last for 15 students?
  17. 17.A hall floor is 240 cm long and 210 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.How many factors does 34 have?
  19. 19.4 × (27 − 21) + 48 ÷ 4 =
  20. 20.5/6 of 24 + 3 × 6 =
  21. 21.Find the LCM of 16 and 12.
  22. 22.How many factors does 51 have?
  23. 23.The HCF of two numbers is 2 and their LCM is 24. One of the numbers is 8. What is the other number?
  24. 24.If 2 kg of rice costs ₹134, how many kg can you buy for ₹335?
  25. 25.A car goes 240 km on 10 litres of petrol. How far can it go on 40 litres (in km)?
  26. 26.If 8 kg of rice costs ₹608, how many kg can you buy for ₹988?
  27. 27.Which of these numbers divides exactly by 6? (a) 6176 (b) 7106 (c) 1712 (d) 3702
  28. 28.9 : 11 = 18 : ?
  29. 29.Which is closest to 897 × 88? (Round each number first.) (a) 8100 (b) 162000 (c) 81000 (d) 810000
  30. 30.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  31. 31.Two tanks hold 45 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.Find the smallest number bigger than 5 that leaves a remainder of 2 when divided by 4, 5 or 3.
  33. 33.Karan scored 24 marks out of 40 in a test. What percentage did Karan score?
  34. 34.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  35. 35.Round 21.54 to one decimal place. =
  36. 36.Which of these numbers divides exactly by 3? (a) 1466 (b) 3502 (c) 5211 (d) 7129
  37. 37.What percent of 500 is 30?
  38. 38.Which is closest to 1000 ÷ 51? (a) 10 (b) 40 (c) 20 (d) 200
  39. 39.2 painters can paint a school in 14 days. How many days would 14 painters take, working at the same speed?
  40. 40.40 + 4 × 8 − 12 =

Answer key

  1. 16
  2. 9753
  3. 62
  4. 27000
  5. 2
  6. 14
  7. 1/2
  8. 60
  9. 252
  10. 40
  11. 11
  12. 7
  13. 140
  14. 144
  15. 42000
  16. 11
  17. 56
  18. 4
  19. 36
  20. 38
  21. 48
  22. 4
  23. 6
  24. 5
  25. 960
  26. 13
  27. 3702
  28. 22
  29. 81000
  30. 20
  31. 5
  32. 62
  33. 60
  34. 125
  35. 21.5
  36. 5211
  37. 6
  38. 20
  39. 2
  40. 60

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