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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 239 · 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. 1.4 × (20 − 19) + 6 ÷ 2 =
  2. 2.Round 16.11 to one decimal place. =
  3. 3.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  4. 4.Divide ₹420 between Kavya and Manav in the ratio 1 : 6. How much does Manav get (in ₹)?
  5. 5.Which of these numbers divides exactly by 4? (a) 4539 (b) 9748 (c) 6141 (d) 4770
  6. 6.Round 35768 to the nearest thousand.
  7. 7.10% of a number is 32. What is the number?
  8. 8.4 painters can paint a school in 21 days. How many days would 12 painters take, working at the same speed?
  9. 9.2/10 + 8/9 =
  10. 10.Pooja scored 38 marks out of 50 in a test. What percentage did Pooja score?
  11. 11.Two tanks hold 60 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  12. 12.Which of these numbers divides exactly by 11? (a) 2629 (b) 3215 (c) 3317 (d) 7412
  13. 13.3 : 12 = 6 : ?
  14. 14.Round 40276 to the nearest thousand.
  15. 15.Round 59840 to the nearest hundred.
  16. 16.A hall floor is 360 cm long and 315 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.What is 1/2 of ₹14?
  18. 18.What percent of 25 is 24?
  19. 19.Find the LCM of 10 and 4.
  20. 20.(2 + 5) × 9 − 20 =
  21. 21.Find the LCM of 3, 14 and 15.
  22. 22.The ratio of boys to girls in a class is 5 : 4. There are 25 boys. How many girls are there?
  23. 23.Three temple bells ring every 6, 15 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.75% of a number is 147. What is the number?
  25. 25.What is the smallest number you must add to 214 so that it divides exactly by 12?
  26. 26.What is 15% of 20?
  27. 27.Find the HCF of 32 and 24.
  28. 28.10/11 − 1/2 =
  29. 29.The HCF of two numbers is 9 and their LCM is 135. One of the numbers is 27. What is the other number?
  30. 30.Two tanks hold 240 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.48 + 2 × 4 − 41 =
  32. 32.How many factors does 54 have?
  33. 33.Find the LCM of 5 and 9.
  34. 34.Find the LCM of 42 and 12.
  35. 35.A hall floor is 160 cm long and 140 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  36. 36.4 : 12 = 8 : ?
  37. 37.2/3 − 2/6 =
  38. 38.1/4 of 32 + 4 × 8 =
  39. 39.Write 7/10 as a percent.
  40. 40.Find the LCM of 3, 2 and 9.

Answer key

  1. 7
  2. 16.1
  3. 54
  4. 360
  5. 9748
  6. 36000
  7. 320
  8. 7
  9. 49/45
  10. 76
  11. 20
  12. 2629
  13. 24
  14. 40000
  15. 59800
  16. 56
  17. 7
  18. 96
  19. 20
  20. 43
  21. 210
  22. 20
  23. 120
  24. 196
  25. 2
  26. 3
  27. 8
  28. 9/22
  29. 45
  30. 40
  31. 15
  32. 8
  33. 45
  34. 84
  35. 56
  36. 24
  37. 1/3
  38. 40
  39. 70
  40. 18

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