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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 674 · 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.The HCF of two numbers is 7 and their LCM is 168. One of the numbers is 56. What is the other number?
  2. 2.If 6 kg of rice costs ₹252, how many kg can you buy for ₹546?
  3. 3.Find the LCM of 7 and 8.
  4. 4.42 − 40 ÷ 8 × 8 =
  5. 5.Find the HCF of 65 and 91.
  6. 6.Which is closest to 504 × 82? (Round each number first.) (a) 40000 (b) 80000 (c) 4000 (d) 400000
  7. 7.30 − 72 ÷ 8 × 2 =
  8. 8.8/9 − 2/5 =
  9. 9.Karan takes 45 seconds and Priya takes 30 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?
  10. 10.A hostel has enough food for 5 students for 23 days. How many days will the same food last for 23 students?
  11. 11.6 : 11 = 12 : ?
  12. 12.A car goes 81 km on 9 litres of petrol. How far can it go on 6 litres (in km)?
  13. 13.Which is closest to 2507 ÷ 51? (a) 25 (b) 500 (c) 100 (d) 50
  14. 14.A car goes 115 km on 5 litres of petrol. How far can it go on 25 litres (in km)?
  15. 15.Three temple bells ring every 12, 30 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  16. 16.Round 10.92 to one decimal place. =
  17. 17.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 9. What is the other number?
  18. 18.Two tanks hold 200 litres and 160 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  19. 19.5% of a number is 2. What is the number?
  20. 20.7 : 4 = 56 : ?
  21. 21.1/6 of 72 + 7 × 4 =
  22. 22.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 4 or 3.
  23. 23.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 10, 12 or 5.
  24. 24.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  25. 25.8 × (26 − 14) + 8 ÷ 4 =
  26. 26.What is 12% of 150?
  27. 27.Which is closest to 598 × 40? (Round each number first.) (a) 2400 (b) 240000 (c) 48000 (d) 24000
  28. 28.Aarav takes 40 seconds and Kabir 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?
  29. 29.5 × (15 − 3) + 54 ÷ 9 =
  30. 30.If 11 cricket balls cost ₹451, how much do 20 cricket balls cost (in ₹)?
  31. 31.What is the smallest number you must take away from 509 so that it divides exactly by 3?
  32. 32.Write 1/4 as a percent.
  33. 33.5/6 of 72 + 9 × 7 =
  34. 34.A car goes 88 km on 8 litres of petrol. How far can it go on 2 litres (in km)?
  35. 35.What percent of 80 is 24?
  36. 36.Zoya scored 2 marks out of 40 in a test. What percentage did Zoya score?
  37. 37.If 3 pencil boxes cost ₹36, how much do 5 pencil boxes cost (in ₹)?
  38. 38.Divide ₹340 between Pooja and Ishaan in the ratio 8 : 9. How much does Ishaan get (in ₹)?
  39. 39.1/2 of 8 + 7 × 3 =
  40. 40.Round 97390 to the nearest thousand.

Answer key

  1. 21
  2. 13
  3. 56
  4. 2
  5. 13
  6. 40000
  7. 12
  8. 22/45
  9. 90
  10. 5
  11. 22
  12. 54
  13. 50
  14. 575
  15. 60
  16. 10.9
  17. 6
  18. 40
  19. 40
  20. 32
  21. 40
  22. 61
  23. 61
  24. 64
  25. 98
  26. 18
  27. 24000
  28. 240
  29. 66
  30. 820
  31. 2
  32. 25
  33. 123
  34. 22
  35. 30
  36. 5
  37. 60
  38. 180
  39. 25
  40. 97000

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