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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 147 · 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.Farhan scored 28 marks out of 50 in a test. What percentage did Farhan score?
  2. 2.The HCF of two numbers is 4 and their LCM is 120. One of the numbers is 24. What is the other number?
  3. 3.What is the smallest number you must take away from 267 so that it divides exactly by 11?
  4. 4.1.5 × 2 =
  5. 5.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  6. 6.How many factors does 17 have?
  7. 7.Find the HCF of 63 and 36.
  8. 8.Which is closest to 797 ÷ 41? (a) 40 (b) 10 (c) 20 (d) 200
  9. 9.Find the LCM of 15 and 20.
  10. 10.What is the smallest number you must take away from 908 so that it divides exactly by 8?
  11. 11.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 15, 12 or 5.
  12. 12.If 4 kg of rice costs ₹164, how many kg can you buy for ₹369?
  13. 13.What is 5/7 of 28 students?
  14. 14.5% of a number is 1. What is the number?
  15. 15.2/3 − 2/4 =
  16. 16.What is the smallest number you must add to 643 so that it divides exactly by 11?
  17. 17.17.4 ÷ 6 =
  18. 18.What percent of 200 is 22?
  19. 19.Three temple bells ring every 12, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  20. 20.Two tanks hold 45 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.If 5 kg of rice costs ₹405, how many kg can you buy for ₹1053?
  22. 22.30 − 12 ÷ 3 × 6 =
  23. 23.1/2 of 24 + 8 × 7 =
  24. 24.If 3 kg of rice costs ₹219, how many kg can you buy for ₹584?
  25. 25.2.86 + 8.5 =
  26. 26.If 8 kg of rice costs ₹264, how many kg can you buy for ₹231?
  27. 27.Which of these numbers divides exactly by 9? (a) 3891 (b) 4518 (c) 6490 (d) 4845
  28. 28.Ishaan takes 36 seconds and Zoya takes 30 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  29. 29.24 + 2 × 8 − 20 =
  30. 30.Which of these numbers divides exactly by 3? (a) 7064 (b) 5211 (c) 7487 (d) 1213
  31. 31.9/12 − 1/4 =
  32. 32.6/7 × 2/3 =
  33. 33.Divide ₹130 between Diya and Meera in the ratio 1 : 9. How much does Diya get (in ₹)?
  34. 34.Find the LCM of 15, 5 and 7.
  35. 35.2/4 × 3/10 =
  36. 36.The ratio of boys to girls in a class is 3 : 5. There are 15 boys. How many girls are there?
  37. 37.Write 31/50 as a percent.
  38. 38.The HCF of two numbers is 5 and their LCM is 100. One of the numbers is 20. What is the other number?
  39. 39.A hall floor is 125 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.11 painters can paint a school in 26 days. How many days would 13 painters take, working at the same speed?

Answer key

  1. 56
  2. 20
  3. 3
  4. 3
  5. 16
  6. 2
  7. 9
  8. 20
  9. 60
  10. 4
  11. 63
  12. 9
  13. 20
  14. 20
  15. 1/6
  16. 6
  17. 2.9
  18. 11
  19. 24
  20. 15
  21. 13
  22. 6
  23. 68
  24. 8
  25. 11.36
  26. 7
  27. 4518
  28. 180
  29. 20
  30. 5211
  31. 1/2
  32. 4/7
  33. 13
  34. 105
  35. 3/20
  36. 25
  37. 62
  38. 25
  39. 15
  40. 22

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