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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 507 · 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.Which is closest to 205 + 403 + 804? (a) 1400 (b) 1600 (c) 1300 (d) 1500
  3. 3.The ratio of boys to girls in a class is 6 : 1. There are 18 boys. How many girls are there?
  4. 4.1/4 of 8 + 8 × 5 =
  5. 5.The HCF of two numbers is 2 and their LCM is 84. One of the numbers is 14. What is the other number?
  6. 6.A hostel has enough food for 8 students for 16 days. How many days will the same food last for 4 students?
  7. 7.A hostel has enough food for 5 students for 7 days. How many days will the same food last for 7 students?
  8. 8.10 painters can paint a school in 8 days. How many days would 2 painters take, working at the same speed?
  9. 9.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 4, 15 or 5.
  10. 10.Find the LCM of 6 and 9.
  11. 11.If 11 kites cost ₹231, how much do 2 kites cost (in ₹)?
  12. 12.(5 + 16) × 2 − 16 =
  13. 13.The HCF of two numbers is 2 and their LCM is 40. One of the numbers is 10. What is the other number?
  14. 14.How many factors does 30 have?
  15. 15.5.23 + 5.8 =
  16. 16.1/5 × 3/4 =
  17. 17.Which is closest to 101 + 202 + 202? (a) 400 (b) 600 (c) 700 (d) 500
  18. 18.Round 32.71 to one decimal place. =
  19. 19.8/10 × 11/12 =
  20. 20.Round 45.19 to one decimal place. =
  21. 21.Aditya scored 68 marks out of 80 in a test. What percentage did Aditya score?
  22. 22.15% of a number is 18. What is the number?
  23. 23.If 3 kites cost ₹99, how much do 18 kites cost (in ₹)?
  24. 24.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  25. 25.5 painters can paint a school in 15 days. How many days would 3 painters take, working at the same speed?
  26. 26.8.51 + 5.1 =
  27. 27.6/7 of 28 + 5 × 3 =
  28. 28.If 3 cricket balls cost ₹45, how much do 6 cricket balls cost (in ₹)?
  29. 29.If 8 kg of rice costs ₹560, how many kg can you buy for ₹280?
  30. 30.What is the smallest number you must take away from 915 so that it divides exactly by 4?
  31. 31.Two tanks hold 50 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.Which of these numbers divides exactly by 6? (a) 9364 (b) 8556 (c) 7778 (d) 8258
  33. 33.A car goes 112 km on 8 litres of petrol. How far can it go on 16 litres (in km)?
  34. 34.If 6 kg of rice costs ₹276, how many kg can you buy for ₹138?
  35. 35.5 × (19 − 8) + 18 ÷ 3 =
  36. 36.The ratio of boys to girls in a class is 6 : 1. There are 36 boys. How many girls are there?
  37. 37.3/4 − 3/6 =
  38. 38.Find the third proportional to 2 and 10 (that is, 2 : 10 = 10 : ?).
  39. 39.5/7 of 21 + 4 × 2 =
  40. 40.How many factors does 13 have?

Answer key

  1. 4
  2. 1400
  3. 3
  4. 42
  5. 12
  6. 32
  7. 5
  8. 40
  9. 61
  10. 18
  11. 42
  12. 26
  13. 8
  14. 8
  15. 11.03
  16. 3/20
  17. 500
  18. 32.7
  19. 11/15
  20. 45.2
  21. 85
  22. 120
  23. 594
  24. 150
  25. 25
  26. 13.61
  27. 39
  28. 90
  29. 4
  30. 3
  31. 25
  32. 8556
  33. 224
  34. 3
  35. 61
  36. 6
  37. 1/4
  38. 50
  39. 23
  40. 2

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