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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 532 · 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.Three temple bells ring every 9, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Round 51989 to the nearest ten.
  3. 3.What is the smallest number you must add to 470 so that it divides exactly by 6?
  4. 4.Find the HCF of 42 and 36.
  5. 5.If 7 kg of rice costs ₹357, how many kg can you buy for ₹714?
  6. 6.What percent of 250 is 15?
  7. 7.If 2 cricket balls cost ₹24, how much do 15 cricket balls cost (in ₹)?
  8. 8.The ratio of boys to girls in a class is 1 : 4. There are 9 boys. How many girls are there?
  9. 9.Which is closest to 897 × 42? (Round each number first.) (a) 72000 (b) 3600 (c) 360000 (d) 36000
  10. 10.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  11. 11.If 12 bottles of juice cost ₹396, how much do 7 bottles of juice cost (in ₹)?
  12. 12.Find the HCF of 32 and 72.
  13. 13.31 + 3 × 5 − 15 =
  14. 14.Divide ₹225 between Pooja and Manav in the ratio 8 : 1. How much does Pooja get (in ₹)?
  15. 15.Two tanks hold 80 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.What percent of 80 is 60?
  17. 17.If 11 bottles of juice cost ₹561, how much do 12 bottles of juice cost (in ₹)?
  18. 18.Which is closest to 304 × 49? (Round each number first.) (a) 150000 (b) 1500 (c) 30000 (d) 15000
  19. 19.Three temple bells ring every 4, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  20. 20.Find the LCM of 12, 10 and 8.
  21. 21.Meera scored 38 marks out of 40 in a test. What percentage did Meera score?
  22. 22.A hall floor is 150 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.8 painters can paint a school in 28 days. How many days would 4 painters take, working at the same speed?
  24. 24.2/3 + 7/8 =
  25. 25.8 − 18 ÷ 9 × 2 =
  26. 26.Divide ₹342 between Rohan and Kavya in the ratio 8 : 1. How much does Rohan get (in ₹)?
  27. 27.Find the LCM of 10, 5 and 6.
  28. 28.What is 1/2 of 12 students?
  29. 29.What is 2/9 of 153 kg?
  30. 30.Find the LCM of 11, 12 and 2.
  31. 31.A car goes 24 km on 2 litres of petrol. How far can it go on 13 litres (in km)?
  32. 32.Find the LCM of 5 and 2.
  33. 33.Which of these numbers divides exactly by 4? (a) 8571 (b) 2480 (c) 6845 (d) 2926
  34. 34.A hall floor is 160 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  35. 35.If 7 kg of rice costs ₹553, how many kg can you buy for ₹790?
  36. 36.Which is closest to 305 + 95 + 101? (a) 700 (b) 500 (c) 600 (d) 400
  37. 37.Find the LCM of 4 and 10.
  38. 38.2/4 × 1/3 =
  39. 39.The ratio of boys to girls in a class is 8 : 9. There are 64 boys. How many girls are there?
  40. 40.The HCF of two numbers is 3 and their LCM is 45. One of the numbers is 15. What is the other number?

Answer key

  1. 72
  2. 51990
  3. 4
  4. 6
  5. 14
  6. 6
  7. 180
  8. 36
  9. 36000
  10. 32
  11. 231
  12. 8
  13. 31
  14. 200
  15. 10
  16. 75
  17. 612
  18. 15000
  19. 60
  20. 120
  21. 95
  22. 10
  23. 56
  24. 37/24
  25. 4
  26. 304
  27. 30
  28. 6
  29. 34
  30. 132
  31. 156
  32. 10
  33. 2480
  34. 12
  35. 10
  36. 500
  37. 20
  38. 1/6
  39. 72
  40. 9

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