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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 823 · 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.Find the HCF of 36 and 48.
  2. 2.A car goes 105 km on 5 litres of petrol. How far can it go on 33 litres (in km)?
  3. 3.Which is closest to 804 ÷ 41? (a) 10 (b) 20 (c) 200 (d) 40
  4. 4.What percent of 200 is 32?
  5. 5.(2 + 15) × 9 − 3 =
  6. 6.Which is closest to 203 + 604 + 301? (a) 1300 (b) 1000 (c) 1100 (d) 1200
  7. 7.7 : 5 = 28 : ?
  8. 8.If 6 cricket balls cost ₹216, how much do 12 cricket balls cost (in ₹)?
  9. 9.If 4 kg of rice costs ₹92, how many kg can you buy for ₹230?
  10. 10.23 + 11 × 2 − 6 =
  11. 11.If 4 erasers cost ₹168, how much do 3 erasers cost (in ₹)?
  12. 12.The ratio of boys to girls in a class is 3 : 7. There are 30 boys. How many girls are there?
  13. 13.3 painters can paint a school in 4 days. How many days would 2 painters take, working at the same speed?
  14. 14.15 + 6 × 10 − 4 =
  15. 15.1/3 × 1/2 =
  16. 16.Which is closest to 2991 ÷ 49? (a) 30 (b) 120 (c) 60 (d) 600
  17. 17.37 + 6 × 11 − 12 =
  18. 18.Round 90.39 to one decimal place. =
  19. 19.11 painters can paint a school in 19 days. How many days would 19 painters take, working at the same speed?
  20. 20.Which of these numbers divides exactly by 9? (a) 6270 (b) 4237 (c) 2943 (d) 5507
  21. 21.Which is closest to 1404 ÷ 21? (a) 35 (b) 140 (c) 70 (d) 700
  22. 22.What is the smallest number you must take away from 895 so that it divides exactly by 4?
  23. 23.1/3 + 1/7 =
  24. 24.Nisha takes 36 seconds and Isha 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?
  25. 25.Three temple bells ring every 24, 15 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  26. 26.Round 25.82 to one decimal place. =
  27. 27.16 ÷ 4 × 2 + 30 =
  28. 28.Write 1/2 as a percent.
  29. 29.A hall floor is 200 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Three temple bells ring every 9, 24 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.How many factors does 30 have?
  32. 32.Which is closest to 3001 ÷ 51? (a) 30 (b) 120 (c) 600 (d) 60
  33. 33.Which is closest to 1809 ÷ 21? (a) 90 (b) 180 (c) 900 (d) 45
  34. 34.If 7 kg of rice costs ₹364, how many kg can you buy for ₹572?
  35. 35.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 6. What is the other number?
  36. 36.Two tanks hold 360 litres and 225 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  37. 37.Find the HCF of 27 and 72.
  38. 38.45 − 10 ÷ 2 × 2 =
  39. 39.Find the LCM of 8 and 7.
  40. 40.Which is closest to 600 + 302 + 599? (a) 1600 (b) 1700 (c) 1400 (d) 1500

Answer key

  1. 12
  2. 693
  3. 20
  4. 16
  5. 150
  6. 1100
  7. 20
  8. 432
  9. 10
  10. 39
  11. 126
  12. 70
  13. 6
  14. 71
  15. 1/6
  16. 60
  17. 91
  18. 90.4
  19. 11
  20. 2943
  21. 70
  22. 3
  23. 10/21
  24. 180
  25. 120
  26. 25.8
  27. 38
  28. 50
  29. 15
  30. 72
  31. 8
  32. 60
  33. 90
  34. 11
  35. 9
  36. 45
  37. 9
  38. 35
  39. 56
  40. 1500

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