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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 39 · 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.Divide ₹245 between Saanvi and Isha in the ratio 2 : 3. How much does Isha get (in ₹)?
  2. 2.Which is closest to 603 + 196 + 700? (a) 1600 (b) 1400 (c) 1700 (d) 1500
  3. 3.What is the smallest number you must take away from 239 so that it divides exactly by 8?
  4. 4.Find the LCM of 14 and 10.
  5. 5.Find the LCM of 8 and 9.
  6. 6.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  7. 7.Saanvi takes 50 seconds and Kabir 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?
  8. 8.22 − 18 ÷ 2 × 2 =
  9. 9.Find the HCF of 25 and 20.
  10. 10.A hall floor is 320 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  11. 11.What percent of 400 is 68?
  12. 12.2/3 + 7/8 =
  13. 13.4/7 × 3/5 =
  14. 14.Which is closest to 597 × 91? (Round each number first.) (a) 5400 (b) 540000 (c) 108000 (d) 54000
  15. 15.How many factors does 45 have?
  16. 16.Find the HCF of 63 and 72.
  17. 17.Three temple bells ring every 30, 5 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.The HCF of two numbers is 6 and their LCM is 90. One of the numbers is 18. What is the other number?
  19. 19.Which is closest to 696 + 99 + 705? (a) 1500 (b) 1600 (c) 1400 (d) 1700
  20. 20.What is 1/3 of ₹48?
  21. 21.What is the smallest number you must take away from 485 so that it divides exactly by 11?
  22. 22.Which is closest to 202 × 90? (Round each number first.) (a) 36000 (b) 1800 (c) 180000 (d) 18000
  23. 23.Which of these numbers divides exactly by 3? (a) 7891 (b) 2135 (c) 9055 (d) 4230
  24. 24.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  25. 25.8 : 4 = 64 : ?
  26. 26.Find the LCM of 14, 6 and 7.
  27. 27.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  28. 28.If 5 notebooks cost ₹15, how much do 3 notebooks cost (in ₹)?
  29. 29.3/4 of 36 + 3 × 5 =
  30. 30.Which of these numbers divides exactly by 9? (a) 4974 (b) 3719 (c) 6135 (d) 1368
  31. 31.Which is closest to 703 × 30? (Round each number first.) (a) 42000 (b) 21000 (c) 2100 (d) 210000
  32. 32.How many factors does 65 have?
  33. 33.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  34. 34.Write 19/50 as a percent.
  35. 35.The ratio of boys to girls in a class is 9 : 2. There are 72 boys. How many girls are there?
  36. 36.Find the HCF of 32 and 12.
  37. 37.Find the LCM of 3, 9 and 7.
  38. 38.Which is closest to 1498 ÷ 29? (a) 500 (b) 100 (c) 25 (d) 50
  39. 39.12 : 15 = 96 : ?
  40. 40.A hostel has enough food for 12 students for 8 days. How many days will the same food last for 6 students?

Answer key

  1. 147
  2. 1500
  3. 7
  4. 70
  5. 72
  6. 20
  7. 150
  8. 4
  9. 5
  10. 24
  11. 17
  12. 37/24
  13. 12/35
  14. 54000
  15. 6
  16. 9
  17. 90
  18. 30
  19. 1500
  20. 16
  21. 1
  22. 18000
  23. 4230
  24. 28
  25. 32
  26. 42
  27. 24
  28. 9
  29. 42
  30. 1368
  31. 21000
  32. 4
  33. 36
  34. 38
  35. 16
  36. 4
  37. 63
  38. 50
  39. 120
  40. 16

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