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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 627 · 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.How many factors does 33 have?
  2. 2.What percent of 80 is 40?
  3. 3.Round 89.19 to one decimal place. =
  4. 4.What is the smallest number you must take away from 755 so that it divides exactly by 4?
  5. 5.Pooja takes 60 seconds and Zoya takes 50 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?
  6. 6.20% of a number is 37. What is the number?
  7. 7.3/4 × 1/2 =
  8. 8.The HCF of two numbers is 4 and their LCM is 96. One of the numbers is 32. What is the other number?
  9. 9.What percent of 25 is 6?
  10. 10.What is 75% of 276?
  11. 11.8 × (12 − 5) + 81 ÷ 9 =
  12. 12.45 − 8 ÷ 2 × 4 =
  13. 13.Isha scored 76 marks out of 80 in a test. What percentage did Isha score?
  14. 14.If 11 bottles of juice cost ₹440, how much do 4 bottles of juice cost (in ₹)?
  15. 15.Which is closest to 296 × 70? (Round each number first.) (a) 2100 (b) 210000 (c) 42000 (d) 21000
  16. 16.The ratio of boys to girls in a class is 3 : 2. There are 18 boys. How many girls are there?
  17. 17.What is 1/3 of 66 students?
  18. 18.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  19. 19.A hall floor is 320 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  20. 20.31 + 10 × 8 − 31 =
  21. 21.27 ÷ 9 × 2 + 2 =
  22. 22.Find the LCM of 14, 10 and 3.
  23. 23.If 9 bottles of juice cost ₹117, how much do 20 bottles of juice cost (in ₹)?
  24. 24.60% of a number is 228. What is the number?
  25. 25.39.2 ÷ 7 =
  26. 26.Find the HCF of 40 and 48.
  27. 27.2/10 × 10/12 =
  28. 28.Round 24.71 to one decimal place. =
  29. 29.5% of a number is 17. What is the number?
  30. 30.Find the LCM of 12, 8 and 9.
  31. 31.If 4 kg of rice costs ₹328, how many kg can you buy for ₹1066?
  32. 32.Find the LCM of 12, 4 and 8.
  33. 33.If 4 pens cost ₹196, how much do 8 pens cost (in ₹)?
  34. 34.Round 29.09 to one decimal place. =
  35. 35.If 4 pencil boxes cost ₹28, how much do 7 pencil boxes cost (in ₹)?
  36. 36.Find the HCF of 10 and 16.
  37. 37.Arjun takes 75 seconds and Nisha 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?
  38. 38.Three temple bells ring every 8, 5 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.A car goes 72 km on 6 litres of petrol. How far can it go on 12 litres (in km)?
  40. 40.How many factors does 61 have?

Answer key

  1. 4
  2. 50
  3. 89.2
  4. 3
  5. 300
  6. 185
  7. 3/8
  8. 12
  9. 24
  10. 207
  11. 65
  12. 29
  13. 95
  14. 160
  15. 21000
  16. 12
  17. 22
  18. 225
  19. 24
  20. 80
  21. 8
  22. 210
  23. 260
  24. 380
  25. 5.6
  26. 8
  27. 1/6
  28. 24.7
  29. 340
  30. 72
  31. 13
  32. 24
  33. 392
  34. 29.1
  35. 49
  36. 2
  37. 150
  38. 120
  39. 144
  40. 2

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