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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 671 · 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.Which of these numbers divides exactly by 3? (a) 6241 (b) 3143 (c) 7740 (d) 5126
  2. 2.5.93 + 2.9 =
  3. 3.26 − 6 ÷ 3 × 3 =
  4. 4.4 : 11 = 36 : ?
  5. 5.A car goes 48 km on 4 litres of petrol. How far can it go on 30 litres (in km)?
  6. 6.Round 20.09 to one decimal place. =
  7. 7.What is the smallest number you must add to 527 so that it divides exactly by 8?
  8. 8.What is 10% of 150?
  9. 9.What is 120% of 565?
  10. 10.Find the LCM of 9, 2 and 4.
  11. 11.Find the LCM of 10 and 6.
  12. 12.(9 + 11) × 2 − 19 =
  13. 13.What is the smallest number you must take away from 229 so that it divides exactly by 11?
  14. 14.What is the smallest number you must add to 221 so that it divides exactly by 3?
  15. 15.What is the smallest number you must add to 858 so that it divides exactly by 9?
  16. 16.18 ÷ 6 × 3 + 13 =
  17. 17.Find the LCM of 12 and 18.
  18. 18.A hall floor is 480 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  19. 19.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  20. 20.33 − 6 ÷ 3 × 5 =
  21. 21.Find the HCF of 75 and 105.
  22. 22.11 painters can paint a school in 25 days. How many days would 5 painters take, working at the same speed?
  23. 23.Which is closest to 203 + 505 + 700? (a) 1600 (b) 1400 (c) 1300 (d) 1500
  24. 24.Three temple bells ring every 6, 10 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  25. 25.Which is closest to 2809 ÷ 41? (a) 700 (b) 140 (c) 35 (d) 70
  26. 26.Write 21/50 as a percent.
  27. 27.31 + 11 × 8 − 16 =
  28. 28.50% of a number is 124. What is the number?
  29. 29.50 − 18 ÷ 6 × 7 =
  30. 30.3/8 + 1/12 =
  31. 31.6/10 − 4/7 =
  32. 32.Divide ₹429 between Pooja and Ishaan in the ratio 6 : 5. How much does Pooja get (in ₹)?
  33. 33.Find the LCM of 20 and 25.
  34. 34.Find the LCM of 11, 4 and 2.
  35. 35.Two tanks hold 160 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.28 + 3 × 2 − 13 =
  37. 37.7/11 × 2/3 =
  38. 38.A hostel has enough food for 10 students for 6 days. How many days will the same food last for 5 students?
  39. 39.Saanvi scored 20 marks out of 25 in a test. What percentage did Saanvi score?
  40. 40.Find the LCM of 42 and 30.

Answer key

  1. 7740
  2. 8.83
  3. 20
  4. 99
  5. 360
  6. 20.1
  7. 1
  8. 15
  9. 678
  10. 36
  11. 30
  12. 21
  13. 9
  14. 1
  15. 6
  16. 22
  17. 36
  18. 40
  19. 72
  20. 23
  21. 15
  22. 55
  23. 1400
  24. 60
  25. 70
  26. 42
  27. 103
  28. 248
  29. 29
  30. 11/24
  31. 1/35
  32. 234
  33. 100
  34. 44
  35. 40
  36. 21
  37. 14/33
  38. 12
  39. 80
  40. 210

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