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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 957 · 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. 1.40% of a number is 130. What is the number?
  2. 2.What is the smallest number you must take away from 772 so that it divides exactly by 8?
  3. 3.The HCF of two numbers is 5 and their LCM is 360. One of the numbers is 40. What is the other number?
  4. 4.Find the HCF of 12 and 15.
  5. 5.5/6 of 60 + 6 × 2 =
  6. 6.23 + 3 × 4 − 4 =
  7. 7.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 10 or 5.
  8. 8.Which is closest to 1792 ÷ 31? (a) 60 (b) 600 (c) 30 (d) 120
  9. 9.Three temple bells ring every 5, 4 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.How many factors does 91 have?
  11. 11.Find the LCM of 4, 5 and 2.
  12. 12.Three temple bells ring every 6, 20 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.Write 7/25 as a percent.
  14. 14.Find the HCF of 45 and 75.
  15. 15.3/5 − 5/11 =
  16. 16.The ratio of boys to girls in a class is 1 : 3. There are 5 boys. How many girls are there?
  17. 17.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  18. 18.2/3 × 6/8 =
  19. 19.A car goes 72 km on 4 litres of petrol. How far can it go on 22 litres (in km)?
  20. 20.Which is closest to 101 + 601 + 695? (a) 1300 (b) 1500 (c) 1400 (d) 1600
  21. 21.How many factors does 52 have?
  22. 22.Which is closest to 603 × 19? (Round each number first.) (a) 12000 (b) 24000 (c) 120000 (d) 1200
  23. 23.A car goes 22 km on 2 litres of petrol. How far can it go on 30 litres (in km)?
  24. 24.Write 7/50 as a percent.
  25. 25.9.6 × 8 =
  26. 26.58 − 54 ÷ 6 × 3 =
  27. 27.Find the third proportional to 4 and 16 (that is, 4 : 16 = 16 : ?).
  28. 28.3/6 × 1/2 =
  29. 29.A hall floor is 320 cm long and 200 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Find the LCM of 5, 14 and 6.
  31. 31.Two tanks hold 120 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.If 9 cricket balls cost ₹162, how much do 4 cricket balls cost (in ₹)?
  33. 33.What is the smallest number you must add to 661 so that it divides exactly by 4?
  34. 34.How many factors does 30 have?
  35. 35.Divide ₹375 between Dev and Kavya in the ratio 8 : 7. How much does Dev get (in ₹)?
  36. 36.4 painters can paint a school in 7 days. How many days would 14 painters take, working at the same speed?
  37. 37.How many factors does 58 have?
  38. 38.Which is closest to 400 × 68? (Round each number first.) (a) 28000 (b) 280000 (c) 2800 (d) 56000
  39. 39.Isha scored 31 marks out of 50 in a test. What percentage did Isha score?
  40. 40.How many factors does 93 have?

Answer key

  1. 325
  2. 4
  3. 45
  4. 3
  5. 62
  6. 31
  7. 62
  8. 60
  9. 20
  10. 4
  11. 20
  12. 60
  13. 28
  14. 15
  15. 8/55
  16. 15
  17. 63
  18. 1/2
  19. 396
  20. 1400
  21. 6
  22. 12000
  23. 330
  24. 14
  25. 76.8
  26. 31
  27. 64
  28. 1/4
  29. 40
  30. 210
  31. 20
  32. 72
  33. 3
  34. 8
  35. 200
  36. 2
  37. 4
  38. 28000
  39. 62
  40. 4

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