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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 342 · 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 add to 491 so that it divides exactly by 3?
  2. 2.18 + 4 × 4 − 2 =
  3. 3.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 8, 5 or 15.
  4. 4.Find the HCF of 32 and 24.
  5. 5.Which is closest to 595 ÷ 21? (a) 15 (b) 60 (c) 300 (d) 30
  6. 6.Divide ₹108 between Arjun and Pooja in the ratio 1 : 5. How much does Pooja get (in ₹)?
  7. 7.The ratio of boys to girls in a class is 1 : 3. There are 6 boys. How many girls are there?
  8. 8.Three temple bells ring every 12, 15 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.What is the smallest number you must add to 124 so that it divides exactly by 3?
  10. 10.What is the smallest number you must add to 995 so that it divides exactly by 6?
  11. 11.3 : 14 = 27 : ?
  12. 12.What is the smallest number you must add to 819 so that it divides exactly by 8?
  13. 13.9 : 15 = 72 : ?
  14. 14.Which of these numbers divides exactly by 11? (a) 2362 (b) 8295 (c) 3027 (d) 1023
  15. 15.Which is closest to 1203 ÷ 21? (a) 600 (b) 120 (c) 60 (d) 30
  16. 16.Round 60.52 to one decimal place. =
  17. 17.Dev takes 60 seconds and Zoya takes 90 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?
  18. 18.2/12 × 5/6 =
  19. 19.What is the smallest number you must add to 898 so that it divides exactly by 7?
  20. 20.Which is closest to 4509 ÷ 49? (a) 45 (b) 180 (c) 900 (d) 90
  21. 21.34 − 25 ÷ 5 × 6 =
  22. 22.11 painters can paint a school in 6 days. How many days would 3 painters take, working at the same speed?
  23. 23.A hall floor is 280 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  24. 24.16 ÷ 4 × 9 + 17 =
  25. 25.8/9 − 6/12 =
  26. 26.80 ÷ 8 × 3 + 29 =
  27. 27.5/8 + 1/3 =
  28. 28.How many factors does 36 have?
  29. 29.Find the HCF of 78 and 91.
  30. 30.Which of these numbers divides exactly by 3? (a) 8574 (b) 8350 (c) 9439 (d) 1952
  31. 31.If 9 pens cost ₹216, how much do 17 pens cost (in ₹)?
  32. 32.What is the smallest number you must take away from 958 so that it divides exactly by 8?
  33. 33.How many factors does 16 have?
  34. 34.If 5 erasers cost ₹240, how much do 17 erasers cost (in ₹)?
  35. 35.What is 120% of 465?
  36. 36.The HCF of two numbers is 6 and their LCM is 168. One of the numbers is 42. What is the other number?
  37. 37.Nisha takes 48 seconds and Ananya takes 40 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?
  38. 38.4/5 × 4/6 =
  39. 39.Which of these numbers divides exactly by 11? (a) 3680 (b) 1534 (c) 1892 (d) 8931
  40. 40.Three temple bells ring every 20, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 1
  2. 32
  3. 123
  4. 8
  5. 30
  6. 90
  7. 18
  8. 60
  9. 2
  10. 1
  11. 126
  12. 5
  13. 120
  14. 1023
  15. 60
  16. 60.5
  17. 180
  18. 5/36
  19. 5
  20. 90
  21. 4
  22. 22
  23. 21
  24. 53
  25. 7/18
  26. 59
  27. 23/24
  28. 9
  29. 13
  30. 8574
  31. 408
  32. 6
  33. 5
  34. 816
  35. 558
  36. 24
  37. 240
  38. 8/15
  39. 1892
  40. 40

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