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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 665 · 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. 1.1/3 × 9/10 =
  2. 2.Pooja scored 4 marks out of 40 in a test. What percentage did Pooja score?
  3. 3.How many factors does 28 have?
  4. 4.Which is closest to 703 × 31? (Round each number first.) (a) 210000 (b) 42000 (c) 2100 (d) 21000
  5. 5.If 8 pencil boxes cost ₹304, how much do 18 pencil boxes cost (in ₹)?
  6. 6.3 × (29 − 9) + 15 ÷ 5 =
  7. 7.Manav takes 48 seconds and Vivaan takes 45 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?
  8. 8.How many factors does 56 have?
  9. 9.8/10 + 3/4 =
  10. 10.Round 24.21 to one decimal place. =
  11. 11.If 11 kites cost ₹176, how much do 16 kites cost (in ₹)?
  12. 12.Two tanks hold 25 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  14. 14.Which is closest to 703 + 199 + 900? (a) 2000 (b) 1900 (c) 1700 (d) 1800
  15. 15.Divide ₹352 between Ananya and Isha in the ratio 7 : 9. How much does Isha get (in ₹)?
  16. 16.What is 1/4 of 12 kg?
  17. 17.Which is closest to 95 + 296 + 905? (a) 1400 (b) 1200 (c) 1500 (d) 1300
  18. 18.What is 4/7 of 91 litres?
  19. 19.A hall floor is 100 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  20. 20.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
  21. 21.Three temple bells ring every 9, 18 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.Saanvi scored 56 marks out of 80 in a test. What percentage did Saanvi score?
  23. 23.Find the HCF of 84 and 70.
  24. 24.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  25. 25.4/9 × 1/3 =
  26. 26.A hostel has enough food for 12 students for 27 days. How many days will the same food last for 18 students?
  27. 27.What percent of 400 is 144?
  28. 28.Find the HCF of 21 and 14.
  29. 29.54 − 54 ÷ 9 × 3 =
  30. 30.Which of these numbers divides exactly by 4? (a) 4733 (b) 9905 (c) 5139 (d) 9092
  31. 31.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  32. 32.A hall floor is 225 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.2/3 + 3/7 =
  34. 34.Round 91.74 to one decimal place. =
  35. 35.If 9 mangoes cost ₹405, how much do 3 mangoes cost (in ₹)?
  36. 36.The ratio of boys to girls in a class is 3 : 4. There are 9 boys. How many girls are there?
  37. 37.2/3 × 2/5 =
  38. 38.Round 71028 to the nearest thousand.
  39. 39.2/5 of 60 + 4 × 2 =
  40. 40.Two tanks hold 20 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?

Answer key

  1. 3/10
  2. 10
  3. 6
  4. 21000
  5. 684
  6. 63
  7. 720
  8. 8
  9. 31/20
  10. 24.2
  11. 256
  12. 5
  13. 16
  14. 1800
  15. 198
  16. 3
  17. 1300
  18. 52
  19. 10
  20. 200
  21. 72
  22. 70
  23. 14
  24. 75
  25. 4/27
  26. 18
  27. 36
  28. 7
  29. 36
  30. 9092
  31. 18
  32. 20
  33. 23/21
  34. 91.7
  35. 135
  36. 12
  37. 4/15
  38. 71000
  39. 32
  40. 10

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