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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 333 · 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 LCM of 18 and 30.
  2. 2.3 painters can paint a school in 18 days. How many days would 18 painters take, working at the same speed?
  3. 3.If 7 pens cost ₹301, how much do 2 pens cost (in ₹)?
  4. 4.What is the smallest number you must add to 250 so that it divides exactly by 4?
  5. 5.7 : 8 = 56 : ?
  6. 6.What is the smallest number you must take away from 562 so that it divides exactly by 3?
  7. 7.The HCF of two numbers is 4 and their LCM is 224. One of the numbers is 28. What is the other number?
  8. 8.Find the HCF of 15 and 9.
  9. 9.5.6 × 3 =
  10. 10.Find the HCF of 35 and 42.
  11. 11.Three temple bells ring every 12, 30 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.Find the LCM of 12 and 15.
  13. 13.Find the LCM of 5 and 3.
  14. 14.What percent of 400 is 168?
  15. 15.What is 1/6 of 84 kg?
  16. 16.Which is closest to 900 + 300 + 796? (a) 2000 (b) 2200 (c) 2100 (d) 1900
  17. 17.10% of a number is 22. What is the number?
  18. 18.1/6 × 1/3 =
  19. 19.A hall floor is 315 cm long and 270 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  20. 20.8 : 4 = 32 : ?
  21. 21.Which of these numbers divides exactly by 3? (a) 3852 (b) 8990 (c) 7562 (d) 7718
  22. 22.Find the HCF of 40 and 30.
  23. 23.9 : 13 = 72 : ?
  24. 24.If 8 kg of rice costs ₹232, how many kg can you buy for ₹261?
  25. 25.Find the HCF of 48 and 108.
  26. 26.9 painters can paint a school in 15 days. How many days would 3 painters take, working at the same speed?
  27. 27.5 : 9 = 15 : ?
  28. 28.Find the HCF of 49 and 21.
  29. 29.Which is closest to 2808 ÷ 39? (a) 700 (b) 70 (c) 140 (d) 35
  30. 30.9 painters can paint a school in 28 days. How many days would 12 painters take, working at the same speed?
  31. 31.Round 56738 to the nearest hundred.
  32. 32.4/7 × 2/9 =
  33. 33.Find the LCM of 16 and 18.
  34. 34.What is the smallest number you must add to 926 so that it divides exactly by 13?
  35. 35.Find the LCM of 5, 8 and 10.
  36. 36.7 × (26 − 2) + 54 ÷ 9 =
  37. 37.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  38. 38.20 ÷ 4 × 8 + 15 =
  39. 39.Which of these numbers divides exactly by 9? (a) 1601 (b) 6900 (c) 1053 (d) 9080
  40. 40.Divide ₹486 between Sneha and Ananya in the ratio 8 : 1. How much does Sneha get (in ₹)?

Answer key

  1. 90
  2. 3
  3. 86
  4. 2
  5. 64
  6. 1
  7. 32
  8. 3
  9. 16.8
  10. 7
  11. 60
  12. 60
  13. 15
  14. 42
  15. 14
  16. 2000
  17. 220
  18. 1/18
  19. 42
  20. 16
  21. 3852
  22. 10
  23. 104
  24. 9
  25. 12
  26. 45
  27. 27
  28. 7
  29. 70
  30. 21
  31. 56700
  32. 8/63
  33. 144
  34. 10
  35. 40
  36. 174
  37. 125
  38. 55
  39. 1053
  40. 432

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