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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 371 · 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. 1.3 painters can paint a school in 11 days. How many days would 11 painters take, working at the same speed?
  2. 2.Round 51201 to the nearest hundred.
  3. 3.If 3 cricket balls cost ₹117, how much do 7 cricket balls cost (in ₹)?
  4. 4.Find the LCM of 3 and 5.
  5. 5.What is 10% of 250?
  6. 6.4 : 5 = 36 : ?
  7. 7.23.1 ÷ 3 =
  8. 8.If 5 kg of rice costs ₹200, how many kg can you buy for ₹120?
  9. 9.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  10. 10.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  11. 11.16.8 ÷ 6 =
  12. 12.A car goes 76 km on 4 litres of petrol. How far can it go on 27 litres (in km)?
  13. 13.A car goes 108 km on 6 litres of petrol. How far can it go on 39 litres (in km)?
  14. 14.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 5, 3 or 10.
  15. 15.Which is closest to 797 × 91? (Round each number first.) (a) 7200 (b) 144000 (c) 720000 (d) 72000
  16. 16.7/10 − 1/2 =
  17. 17.Karan takes 36 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?
  18. 18.Find the LCM of 42 and 18.
  19. 19.Find the LCM of 3 and 2.
  20. 20.Which is closest to 895 + 596 + 696? (a) 2300 (b) 2400 (c) 2100 (d) 2200
  21. 21.What is 15% of 120?
  22. 22.9.6 ÷ 3 =
  23. 23.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 9, 15 or 4.
  24. 24.A hostel has enough food for 3 students for 7 days. How many days will the same food last for 7 students?
  25. 25.Which is closest to 699 × 49? (Round each number first.) (a) 3500 (b) 70000 (c) 350000 (d) 35000
  26. 26.11 painters can paint a school in 5 days. How many days would 5 painters take, working at the same speed?
  27. 27.6.4 ÷ 4 =
  28. 28.Three temple bells ring every 30, 20 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.Which of these numbers divides exactly by 3? (a) 5854 (b) 3956 (c) 9578 (d) 6591
  30. 30.Two tanks hold 90 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.28 + 2 × 10 − 3 =
  32. 32.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 3, 12 or 10.
  33. 33.How many factors does 68 have?
  34. 34.4 : 3 = 32 : ?
  35. 35.Find the LCM of 8 and 6.
  36. 36.The HCF of two numbers is 3 and their LCM is 108. One of the numbers is 27. What is the other number?
  37. 37.What is the smallest number you must take away from 392 so that it divides exactly by 12?
  38. 38.8 × (27 − 13) + 21 ÷ 3 =
  39. 39.55 − 20 ÷ 4 × 3 =
  40. 40.If 2 kg of rice costs ₹60, how many kg can you buy for ₹90?

Answer key

  1. 3
  2. 51200
  3. 273
  4. 15
  5. 25
  6. 45
  7. 7.7
  8. 3
  9. 36
  10. 8
  11. 2.8
  12. 513
  13. 702
  14. 31
  15. 72000
  16. 1/5
  17. 180
  18. 126
  19. 6
  20. 2200
  21. 18
  22. 3.2
  23. 181
  24. 3
  25. 35000
  26. 11
  27. 1.6
  28. 60
  29. 6591
  30. 10
  31. 45
  32. 62
  33. 6
  34. 24
  35. 24
  36. 12
  37. 8
  38. 119
  39. 40
  40. 3

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