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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 404 · 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 is closest to 101 + 899 + 405? (a) 1400 (b) 1300 (c) 1600 (d) 1500
  2. 2.Three temple bells ring every 5, 6 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.Which of these numbers divides exactly by 8? (a) 9830 (b) 2963 (c) 7795 (d) 4672
  4. 4.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  5. 5.Vivaan scored 9 marks out of 25 in a test. What percentage did Vivaan score?
  6. 6.89.1 ÷ 9 =
  7. 7.Round 12421 to the nearest hundred.
  8. 8.What is the smallest number you must add to 349 so that it divides exactly by 4?
  9. 9.Find the LCM of 14 and 6.
  10. 10.10 painters can paint a school in 29 days. How many days would 5 painters take, working at the same speed?
  11. 11.Find the HCF of 18 and 16.
  12. 12.How many factors does 58 have?
  13. 13.If 6 kg of rice costs ₹276, how many kg can you buy for ₹138?
  14. 14.Write 3/4 as a percent.
  15. 15.Saanvi takes 45 seconds and Kabir takes 60 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?
  16. 16.(18 + 12) × 4 − 6 =
  17. 17.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 10 or 3.
  18. 18.The HCF of two numbers is 5 and their LCM is 360. One of the numbers is 40. What is the other number?
  19. 19.If 7 kg of rice costs ₹434, how many kg can you buy for ₹558?
  20. 20.Find the HCF of 30 and 36.
  21. 21.2.06 + 7.7 =
  22. 22.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  23. 23.What percent of 25 is 24?
  24. 24.Find the LCM of 2, 4 and 12.
  25. 25.If 2 pens cost ₹36, how much do 18 pens cost (in ₹)?
  26. 26.(13 + 16) × 3 − 22 =
  27. 27.Which is closest to 197 × 19? (Round each number first.) (a) 8000 (b) 40000 (c) 4000 (d) 400
  28. 28.Isha scored 16 marks out of 20 in a test. What percentage did Isha score?
  29. 29.Find the HCF of 56 and 70.
  30. 30.Three temple bells ring every 4, 24 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.What is the smallest number you must take away from 216 so that it divides exactly by 13?
  32. 32.What is 1/3 of 36 litres?
  33. 33.Which is closest to 600 + 805 + 100? (a) 1400 (b) 1600 (c) 1700 (d) 1500
  34. 34.What is the smallest number you must take away from 833 so that it divides exactly by 12?
  35. 35.8 × (20 − 8) + 16 ÷ 8 =
  36. 36.5 painters can paint a school in 18 days. How many days would 3 painters take, working at the same speed?
  37. 37.2/3 of 21 + 7 × 4 =
  38. 38.4 : 3 = 28 : ?
  39. 39.9.2 × 9 =
  40. 40.What is the smallest number you must take away from 775 so that it divides exactly by 12?

Answer key

  1. 1400
  2. 30
  3. 4672
  4. 50
  5. 36
  6. 9.9
  7. 12400
  8. 3
  9. 42
  10. 58
  11. 2
  12. 4
  13. 3
  14. 75
  15. 180
  16. 114
  17. 32
  18. 45
  19. 9
  20. 6
  21. 9.76
  22. 32
  23. 96
  24. 12
  25. 324
  26. 65
  27. 4000
  28. 80
  29. 14
  30. 120
  31. 8
  32. 12
  33. 1500
  34. 5
  35. 98
  36. 30
  37. 42
  38. 21
  39. 82.8
  40. 7

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