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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 521 · 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 HCF of 14 and 16.
  2. 2.What percent of 80 is 44?
  3. 3.What is 4/7 of 14 km?
  4. 4.A car goes 56 km on 7 litres of petrol. How far can it go on 39 litres (in km)?
  5. 5.Which of these numbers divides exactly by 8? (a) 3858 (b) 1927 (c) 3519 (d) 7760
  6. 6.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  7. 7.What is the smallest number you must add to 644 so that it divides exactly by 11?
  8. 8.Find the LCM of 12 and 30.
  9. 9.Which is closest to 897 × 78? (Round each number first.) (a) 720000 (b) 7200 (c) 72000 (d) 144000
  10. 10.66 ÷ 6 × 2 + 2 =
  11. 11.1/2 of 14 + 4 × 3 =
  12. 12.A hall floor is 200 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.4.7 × 2 =
  14. 14.37 + 10 × 3 − 5 =
  15. 15.Which is closest to 801 + 98 + 804? (a) 1600 (b) 1700 (c) 1800 (d) 1900
  16. 16.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 5, 3 or 15.
  17. 17.What is the smallest number you must add to 221 so that it divides exactly by 6?
  18. 18.3.25 + 7.2 =
  19. 19.The HCF of two numbers is 4 and their LCM is 120. One of the numbers is 20. What is the other number?
  20. 20.Write 3/4 as a percent.
  21. 21.Which is closest to 4507 ÷ 49? (a) 180 (b) 900 (c) 45 (d) 90
  22. 22.What is 20% of 540?
  23. 23.A hostel has enough food for 4 students for 15 days. How many days will the same food last for 3 students?
  24. 24.The ratio of boys to girls in a class is 4 : 1. There are 40 boys. How many girls are there?
  25. 25.32 + 6 × 6 − 12 =
  26. 26.Two tanks hold 270 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.The HCF of two numbers is 8 and their LCM is 288. One of the numbers is 32. What is the other number?
  28. 28.Find the HCF of 26 and 39.
  29. 29.1/2 × 1/11 =
  30. 30.Find the LCM of 4 and 18.
  31. 31.50 − 56 ÷ 7 × 5 =
  32. 32.A hostel has enough food for 9 students for 7 days. How many days will the same food last for 7 students?
  33. 33.What is the smallest number you must add to 706 so that it divides exactly by 13?
  34. 34.Which of these numbers divides exactly by 3? (a) 1613 (b) 9943 (c) 5818 (d) 2412
  35. 35.12 ÷ 6 × 4 + 24 =
  36. 36.17 + 7 × 5 − 3 =
  37. 37.Which is closest to 501 × 18? (Round each number first.) (a) 100000 (b) 1000 (c) 10000 (d) 20000
  38. 38.If 3 kg of rice costs ₹69, how many kg can you buy for ₹230?
  39. 39.Find the LCM of 7 and 6.
  40. 40.Write 2/5 as a percent.

Answer key

  1. 2
  2. 55
  3. 8
  4. 312
  5. 7760
  6. 144
  7. 5
  8. 60
  9. 72000
  10. 24
  11. 19
  12. 10
  13. 9.4
  14. 62
  15. 1700
  16. 16
  17. 1
  18. 10.45
  19. 24
  20. 75
  21. 90
  22. 108
  23. 20
  24. 10
  25. 56
  26. 30
  27. 72
  28. 13
  29. 1/22
  30. 36
  31. 10
  32. 9
  33. 9
  34. 2412
  35. 32
  36. 49
  37. 10000
  38. 10
  39. 42
  40. 40

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