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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 72 · 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. 1.7.7 × 7 =
  2. 2.7 × (17 − 3) + 32 ÷ 8 =
  3. 3.Meera scored 9 marks out of 50 in a test. What percentage did Meera score?
  4. 4.1/7 × 2/5 =
  5. 5.If 9 notebooks cost ₹261, how much do 2 notebooks cost (in ₹)?
  6. 6.The ratio of boys to girls in a class is 3 : 2. There are 6 boys. How many girls are there?
  7. 7.16 ÷ 4 × 5 + 2 =
  8. 8.3.6 × 3 =
  9. 9.Which is closest to 704 × 20? (Round each number first.) (a) 28000 (b) 1400 (c) 14000 (d) 140000
  10. 10.Find the HCF of 60 and 36.
  11. 11.What is the smallest number you must take away from 709 so that it divides exactly by 12?
  12. 12.46 − 42 ÷ 6 × 3 =
  13. 13.Find the LCM of 40 and 15.
  14. 14.80% of a number is 324. What is the number?
  15. 15.11 : 3 = 66 : ?
  16. 16.Find the smallest number bigger than 10 that leaves a remainder of 3 when divided by 10, 5 or 9.
  17. 17.9 : 6 = 18 : ?
  18. 18.If 5 kg of rice costs ₹325, how many kg can you buy for ₹455?
  19. 19.48 ÷ 8 × 6 + 13 =
  20. 20.Two tanks hold 30 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.6/7 × 5/9 =
  22. 22.Which is closest to 604 + 105 + 795? (a) 1700 (b) 1500 (c) 1600 (d) 1400
  23. 23.Arjun scored 43 marks out of 50 in a test. What percentage did Arjun score?
  24. 24.Find the LCM of 12 and 16.
  25. 25.7/10 × 1/5 =
  26. 26.The HCF of two numbers is 4 and their LCM is 144. One of the numbers is 16. What is the other number?
  27. 27.7/10 × 1/2 =
  28. 28.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  29. 29.32 + 5 × 3 − 21 =
  30. 30.What is the smallest number you must take away from 173 so that it divides exactly by 6?
  31. 31.Three temple bells ring every 4, 18 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.Aarav takes 48 seconds and Karan 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?
  33. 33.Three temple bells ring every 5, 9 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  34. 34.65.1 ÷ 7 =
  35. 35.1.48 + 6.6 =
  36. 36.6.19 + 2.3 =
  37. 37.Divide ₹70 between Ananya and Kavya in the ratio 3 : 7. How much does Kavya get (in ₹)?
  38. 38.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 3, 15 or 9.
  39. 39.A car goes 117 km on 9 litres of petrol. How far can it go on 32 litres (in km)?
  40. 40.Divide ₹66 between Vivaan and Pooja in the ratio 8 : 3. How much does Pooja get (in ₹)?

Answer key

  1. 53.9
  2. 102
  3. 18
  4. 2/35
  5. 58
  6. 4
  7. 22
  8. 10.8
  9. 14000
  10. 12
  11. 1
  12. 25
  13. 120
  14. 405
  15. 18
  16. 93
  17. 12
  18. 7
  19. 49
  20. 15
  21. 10/21
  22. 1500
  23. 86
  24. 48
  25. 7/50
  26. 36
  27. 7/20
  28. 100
  29. 26
  30. 5
  31. 36
  32. 240
  33. 90
  34. 9.3
  35. 8.08
  36. 8.49
  37. 49
  38. 47
  39. 416
  40. 18

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