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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 723 · 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 take away from 192 so that it divides exactly by 7?
  2. 2.A hostel has enough food for 9 students for 8 days. How many days will the same food last for 4 students?
  3. 3.Three temple bells ring every 9, 18 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.How many factors does 49 have?
  5. 5.What is the smallest number you must take away from 605 so that it divides exactly by 9?
  6. 6.A car goes 46 km on 2 litres of petrol. How far can it go on 7 litres (in km)?
  7. 7.108 ÷ 9 × 7 + 17 =
  8. 8.Diya scored 7 marks out of 25 in a test. What percentage did Diya score?
  9. 9.49 + 3 × 10 − 14 =
  10. 10.What is 120% of 5?
  11. 11.How many factors does 38 have?
  12. 12.What is 7/9 of ₹189?
  13. 13.If 3 kg of rice costs ₹81, how many kg can you buy for ₹135?
  14. 14.If 9 cricket balls cost ₹468, how much do 19 cricket balls cost (in ₹)?
  15. 15.Find the HCF of 135 and 60.
  16. 16.50% of a number is 19. What is the number?
  17. 17.Find the LCM of 28 and 12.
  18. 18.The HCF of two numbers is 2 and their LCM is 70. One of the numbers is 10. What is the other number?
  19. 19.Find the HCF of 88 and 77.
  20. 20.81 ÷ 9 × 9 + 7 =
  21. 21.66.4 ÷ 8 =
  22. 22.10 − 21 ÷ 7 × 3 =
  23. 23.1/2 of 16 + 5 × 2 =
  24. 24.Farhan scored 10 marks out of 20 in a test. What percentage did Farhan score?
  25. 25.Which is closest to 196 × 18? (Round each number first.) (a) 4000 (b) 8000 (c) 400 (d) 40000
  26. 26.Rahul takes 40 seconds and Sneha takes 48 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?
  27. 27.What is the smallest number you must take away from 567 so that it divides exactly by 6?
  28. 28.If 10 pencil boxes cost ₹100, how much do 20 pencil boxes cost (in ₹)?
  29. 29.2 × (29 − 1) + 4 ÷ 2 =
  30. 30.The ratio of boys to girls in a class is 2 : 9. There are 14 boys. How many girls are there?
  31. 31.Divide ₹175 between Meera and Priya in the ratio 6 : 1. How much does Meera get (in ₹)?
  32. 32.What is 40% of 435?
  33. 33.Round 82417 to the nearest hundred.
  34. 34.The ratio of boys to girls in a class is 3 : 7. There are 9 boys. How many girls are there?
  35. 35.Two tanks hold 150 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.9.99 + 7.4 =
  37. 37.Round 30511 to the nearest thousand.
  38. 38.Find the LCM of 6, 2 and 10.
  39. 39.Which of these numbers divides exactly by 9? (a) 5206 (b) 6625 (c) 5347 (d) 2970
  40. 40.1/7 + 1/5 =

Answer key

  1. 3
  2. 18
  3. 90
  4. 3
  5. 2
  6. 161
  7. 101
  8. 28
  9. 65
  10. 6
  11. 4
  12. 147
  13. 5
  14. 988
  15. 15
  16. 38
  17. 84
  18. 14
  19. 11
  20. 88
  21. 8.3
  22. 1
  23. 18
  24. 50
  25. 4000
  26. 240
  27. 3
  28. 200
  29. 58
  30. 63
  31. 150
  32. 174
  33. 82400
  34. 21
  35. 30
  36. 17.39
  37. 31000
  38. 30
  39. 2970
  40. 12/35

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