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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 317 · 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.The ratio of boys to girls in a class is 1 : 6. There are 10 boys. How many girls are there?
  2. 2.8 × (28 − 25) + 28 ÷ 7 =
  3. 3.(14 + 19) × 3 − 8 =
  4. 4.1/3 × 2/9 =
  5. 5.2/4 + 5/11 =
  6. 6.Find the LCM of 25 and 10.
  7. 7.A car goes 42 km on 2 litres of petrol. How far can it go on 3 litres (in km)?
  8. 8.Find the HCF of 36 and 96.
  9. 9.What is the smallest number you must add to 805 so that it divides exactly by 13?
  10. 10.Find the HCF of 12 and 10.
  11. 11.5.2 × 5 =
  12. 12.Which of these numbers divides exactly by 6? (a) 1413 (b) 8500 (c) 2871 (d) 3600
  13. 13.3/10 + 1/2 =
  14. 14.Round 85.66 to one decimal place. =
  15. 15.How many factors does 72 have?
  16. 16.8 : 9 = 16 : ?
  17. 17.The HCF of two numbers is 2 and their LCM is 40. One of the numbers is 8. What is the other number?
  18. 18.What is the smallest number you must add to 308 so that it divides exactly by 9?
  19. 19.1.8 × 6 =
  20. 20.Divide ₹315 between Zoya and Isha in the ratio 2 : 5. How much does Zoya get (in ₹)?
  21. 21.45 ÷ 9 × 7 + 2 =
  22. 22.Divide ₹350 between Kabir and Rahul in the ratio 1 : 6. How much does Kabir get (in ₹)?
  23. 23.8/11 + 3/6 =
  24. 24.What is the smallest number you must add to 801 so that it divides exactly by 8?
  25. 25.32 − 35 ÷ 5 × 4 =
  26. 26.If 7 kg of rice costs ₹231, how many kg can you buy for ₹198?
  27. 27.A hall floor is 150 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  28. 28.Which is closest to 698 × 18? (Round each number first.) (a) 14000 (b) 28000 (c) 1400 (d) 140000
  29. 29.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 4 or 3.
  30. 30.Two tanks hold 35 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.What is the smallest number you must add to 350 so that it divides exactly by 8?
  32. 32.What is the smallest number you must add to 293 so that it divides exactly by 11?
  33. 33.If 3 kg of rice costs ₹189, how many kg can you buy for ₹693?
  34. 34.Which is closest to 698 + 901 + 298? (a) 2000 (b) 2100 (c) 1900 (d) 1800
  35. 35.Two tanks hold 120 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.Tara scored 10 marks out of 40 in a test. What percentage did Tara score?
  37. 37.The ratio of boys to girls in a class is 4 : 9. There are 40 boys. How many girls are there?
  38. 38.What is 50% of 46?
  39. 39.A hall floor is 150 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.Divide ₹65 between Manav and Rohan in the ratio 8 : 5. How much does Manav get (in ₹)?

Answer key

  1. 60
  2. 28
  3. 91
  4. 2/27
  5. 21/22
  6. 50
  7. 63
  8. 12
  9. 1
  10. 2
  11. 26
  12. 3600
  13. 4/5
  14. 85.7
  15. 12
  16. 18
  17. 10
  18. 7
  19. 10.8
  20. 90
  21. 37
  22. 50
  23. 27/22
  24. 7
  25. 4
  26. 6
  27. 10
  28. 14000
  29. 61
  30. 5
  31. 2
  32. 4
  33. 11
  34. 1900
  35. 15
  36. 25
  37. 90
  38. 23
  39. 6
  40. 40

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