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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 67 · 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.What is the smallest number you must take away from 285 so that it divides exactly by 8?
  2. 2.The HCF of two numbers is 7 and their LCM is 84. One of the numbers is 21. What is the other number?
  3. 3.2 painters can paint a school in 15 days. How many days would 5 painters take, working at the same speed?
  4. 4.9 : 13 = 63 : ?
  5. 5.Kabir scored 18 marks out of 40 in a test. What percentage did Kabir score?
  6. 6.If 5 kg of rice costs ₹265, how many kg can you buy for ₹530?
  7. 7.1/2 of 18 + 6 × 2 =
  8. 8.31 + 4 × 3 − 7 =
  9. 9.80% of a number is 56. What is the number?
  10. 10.2 painters can paint a school in 25 days. How many days would 5 painters take, working at the same speed?
  11. 11.What is 8/9 of 108 students?
  12. 12.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 18. What is the other number?
  13. 13.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 3 or 6.
  14. 14.7 × (26 − 23) + 24 ÷ 6 =
  15. 15.If 12 mangoes cost ₹360, how much do 18 mangoes cost (in ₹)?
  16. 16.(6 + 6) × 9 − 20 =
  17. 17.What is the smallest number you must add to 666 so that it divides exactly by 12?
  18. 18.Which is closest to 898 × 30? (Round each number first.) (a) 2700 (b) 270000 (c) 27000 (d) 54000
  19. 19.What is the smallest number you must add to 356 so that it divides exactly by 7?
  20. 20.25.8 ÷ 3 =
  21. 21.Find the LCM of 3 and 8.
  22. 22.What is 3/4 of 40 km?
  23. 23.Three temple bells ring every 8, 30 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Find the LCM of 5 and 2.
  25. 25.Find the LCM of 6, 14 and 8.
  26. 26.What is 2/5 of 115 km?
  27. 27.Find the LCM of 25 and 40.
  28. 28.2/3 of 18 + 8 × 9 =
  29. 29.Aarav scored 24 marks out of 80 in a test. What percentage did Aarav score?
  30. 30.The HCF of two numbers is 4 and their LCM is 48. One of the numbers is 16. What is the other number?
  31. 31.31 + 5 × 2 − 16 =
  32. 32.How many factors does 22 have?
  33. 33.Farhan scored 12 marks out of 20 in a test. What percentage did Farhan score?
  34. 34.A hall floor is 240 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  35. 35.A car goes 77 km on 7 litres of petrol. How far can it go on 38 litres (in km)?
  36. 36.A hall floor is 175 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  37. 37.Kabir scored 21 marks out of 25 in a test. What percentage did Kabir score?
  38. 38.30 ÷ 6 × 4 + 24 =
  39. 39.40 ÷ 8 × 6 + 3 =
  40. 40.Three temple bells ring every 30, 5 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 5
  2. 28
  3. 6
  4. 91
  5. 45
  6. 10
  7. 21
  8. 36
  9. 70
  10. 10
  11. 96
  12. 8
  13. 14
  14. 25
  15. 540
  16. 88
  17. 6
  18. 27000
  19. 1
  20. 8.6
  21. 24
  22. 30
  23. 120
  24. 10
  25. 168
  26. 46
  27. 200
  28. 84
  29. 30
  30. 12
  31. 25
  32. 4
  33. 60
  34. 12
  35. 418
  36. 42
  37. 84
  38. 44
  39. 33
  40. 60

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