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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 89 · 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. 1.6 ÷ 3 × 7 + 12 =
  2. 2.Find the smallest number bigger than 6 that leaves a remainder of 1 when divided by 6, 4 or 5.
  3. 3.9.8 ÷ 2 =
  4. 4.Diya takes 45 seconds and Vivaan 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?
  5. 5.What is 1/4 of 16 litres?
  6. 6.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 4, 6 or 12.
  7. 7.Find the LCM of 15, 6 and 14.
  8. 8.Find the LCM of 20 and 28.
  9. 9.5% of a number is 19. What is the number?
  10. 10.4/7 of 77 + 2 × 3 =
  11. 11.If 9 notebooks cost ₹369, how much do 20 notebooks cost (in ₹)?
  12. 12.Round 63.28 to one decimal place. =
  13. 13.How many factors does 69 have?
  14. 14.10 painters can paint a school in 7 days. How many days would 14 painters take, working at the same speed?
  15. 15.Which of these numbers divides exactly by 11? (a) 3438 (b) 1683 (c) 2520 (d) 1511
  16. 16.If 2 notebooks cost ₹72, how much do 6 notebooks cost (in ₹)?
  17. 17.8 × (30 − 29) + 15 ÷ 3 =
  18. 18.Three temple bells ring every 6, 20 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.A hall floor is 200 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  20. 20.7 × (17 − 12) + 81 ÷ 9 =
  21. 21.40 + 3 × 12 − 25 =
  22. 22.Find the HCF of 77 and 33.
  23. 23.If 8 bottles of juice cost ₹216, how much do 19 bottles of juice cost (in ₹)?
  24. 24.Rohan scored 16 marks out of 20 in a test. What percentage did Rohan score?
  25. 25.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  26. 26.Which is closest to 597 + 795 + 697? (a) 2300 (b) 2200 (c) 2100 (d) 2000
  27. 27.32 ÷ 8 × 5 + 26 =
  28. 28.2/9 of 54 + 7 × 4 =
  29. 29.A hostel has enough food for 2 students for 30 days. How many days will the same food last for 10 students?
  30. 30.Which of these numbers divides exactly by 11? (a) 6596 (b) 6281 (c) 4437 (d) 7976
  31. 31.How many factors does 37 have?
  32. 32.10 : 6 = 40 : ?
  33. 33.Which is closest to 898 + 598 + 700? (a) 2200 (b) 2100 (c) 2400 (d) 2300
  34. 34.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  35. 35.Find the HCF of 96 and 60.
  36. 36.Pooja scored 24 marks out of 80 in a test. What percentage did Pooja score?
  37. 37.1/2 + 9/10 =
  38. 38.10 painters can paint a school in 4 days. How many days would 5 painters take, working at the same speed?
  39. 39.A car goes 48 km on 2 litres of petrol. How far can it go on 18 litres (in km)?
  40. 40.What is the smallest number you must add to 110 so that it divides exactly by 6?

Answer key

  1. 26
  2. 61
  3. 4.9
  4. 360
  5. 4
  6. 15
  7. 210
  8. 140
  9. 380
  10. 50
  11. 820
  12. 63.3
  13. 4
  14. 5
  15. 1683
  16. 216
  17. 13
  18. 60
  19. 24
  20. 44
  21. 51
  22. 11
  23. 513
  24. 80
  25. 225
  26. 2100
  27. 46
  28. 40
  29. 6
  30. 6281
  31. 2
  32. 24
  33. 2200
  34. 75
  35. 12
  36. 30
  37. 7/5
  38. 8
  39. 432
  40. 4

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