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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 632 · 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.Find the HCF of 70 and 42.
  2. 2.5 × (19 − 4) + 56 ÷ 7 =
  3. 3.A hostel has enough food for 4 students for 14 days. How many days will the same food last for 8 students?
  4. 4.Find the HCF of 16 and 18.
  5. 5.What is the smallest number you must add to 421 so that it divides exactly by 9?
  6. 6.What is 40% of 90?
  7. 7.Zoya scored 7 marks out of 20 in a test. What percentage did Zoya score?
  8. 8.What percent of 80 is 16?
  9. 9.Write 1/20 as a percent.
  10. 10.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 8. What is the other number?
  11. 11.What is 15% of 600?
  12. 12.Which is closest to 201 × 18? (Round each number first.) (a) 40000 (b) 8000 (c) 4000 (d) 400
  13. 13.6/9 + 1/2 =
  14. 14.If 4 kg of rice costs ₹180, how many kg can you buy for ₹90?
  15. 15.Divide ₹65 between Meera and Isha in the ratio 7 : 6. How much does Isha get (in ₹)?
  16. 16.4 : 10 = 20 : ?
  17. 17.Round 73.49 to one decimal place. =
  18. 18.What is the smallest number you must take away from 840 so that it divides exactly by 11?
  19. 19.What is 5/7 of 21 litres?
  20. 20.If 3 notebooks cost ₹21, how much do 7 notebooks cost (in ₹)?
  21. 21.Find the HCF of 72 and 60.
  22. 22.If 9 kg of rice costs ₹756, how many kg can you buy for ₹1008?
  23. 23.Find the LCM of 3, 9 and 10.
  24. 24.Which is closest to 1806 ÷ 31? (a) 120 (b) 600 (c) 60 (d) 30
  25. 25.Find the LCM of 12 and 20.
  26. 26.Find the HCF of 24 and 60.
  27. 27.What is 120% of 10?
  28. 28.The ratio of boys to girls in a class is 4 : 1. There are 28 boys. How many girls are there?
  29. 29.How many factors does 45 have?
  30. 30.11 : 2 = 99 : ?
  31. 31.How many factors does 13 have?
  32. 32.(13 + 12) × 4 − 28 =
  33. 33.What is 5% of 200?
  34. 34.Which is closest to 897 ÷ 31? (a) 15 (b) 60 (c) 30 (d) 300
  35. 35.What is the smallest number you must add to 432 so that it divides exactly by 11?
  36. 36.If 12 pens cost ₹696, how much do 16 pens cost (in ₹)?
  37. 37.1/5 of 50 + 8 × 9 =
  38. 38.2 painters can paint a school in 12 days. How many days would 12 painters take, working at the same speed?
  39. 39.(3 + 13) × 4 − 8 =
  40. 40.What is the smallest number you must take away from 172 so that it divides exactly by 12?

Answer key

  1. 14
  2. 83
  3. 7
  4. 2
  5. 2
  6. 36
  7. 35
  8. 20
  9. 5
  10. 18
  11. 90
  12. 4000
  13. 7/6
  14. 2
  15. 30
  16. 50
  17. 73.5
  18. 4
  19. 15
  20. 49
  21. 12
  22. 12
  23. 90
  24. 60
  25. 60
  26. 12
  27. 12
  28. 7
  29. 6
  30. 18
  31. 2
  32. 72
  33. 10
  34. 30
  35. 8
  36. 928
  37. 82
  38. 2
  39. 56
  40. 4

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