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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 797 · 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 smallest number bigger than 15 that leaves a remainder of 3 when divided by 10, 6 or 15.
  2. 2.The HCF of two numbers is 3 and their LCM is 126. One of the numbers is 18. What is the other number?
  3. 3.If 3 kg of rice costs ₹105, how many kg can you buy for ₹70?
  4. 4.36 + 3 × 4 − 17 =
  5. 5.1/3 − 1/7 =
  6. 6.A hall floor is 315 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  7. 7.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 12 or 8.
  8. 8.Karan scored 27 marks out of 50 in a test. What percentage did Karan score?
  9. 9.9 × (14 − 9) + 25 ÷ 5 =
  10. 10.20% of a number is 29. What is the number?
  11. 11.If 2 notebooks cost ₹90, how much do 10 notebooks cost (in ₹)?
  12. 12.2/3 of 30 + 4 × 7 =
  13. 13.Two tanks hold 90 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  14. 14.Round 24.34 to one decimal place. =
  15. 15.A car goes 125 km on 5 litres of petrol. How far can it go on 25 litres (in km)?
  16. 16.Aditya scored 31 marks out of 50 in a test. What percentage did Aditya score?
  17. 17.A hall floor is 240 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.56 − 56 ÷ 7 × 6 =
  19. 19.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  20. 20.Manav scored 18 marks out of 20 in a test. What percentage did Manav score?
  21. 21.7.68 + 1.4 =
  22. 22.A car goes 60 km on 3 litres of petrol. How far can it go on 40 litres (in km)?
  23. 23.Which is closest to 1007 ÷ 19? (a) 50 (b) 100 (c) 500 (d) 25
  24. 24.The HCF of two numbers is 3 and their LCM is 72. One of the numbers is 24. What is the other number?
  25. 25.The HCF of two numbers is 3 and their LCM is 54. One of the numbers is 27. What is the other number?
  26. 26.Find the HCF of 9 and 15.
  27. 27.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 4, 6 or 15.
  28. 28.What is the smallest number you must add to 411 so that it divides exactly by 6?
  29. 29.Three temple bells ring every 24, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.11 painters can paint a school in 23 days. How many days would 23 painters take, working at the same speed?
  31. 31.40 ÷ 8 × 9 + 5 =
  32. 32.1/2 × 2/12 =
  33. 33.Which is closest to 1793 ÷ 21? (a) 90 (b) 180 (c) 900 (d) 45
  34. 34.Write 31/50 as a percent.
  35. 35.What is the smallest number you must take away from 318 so that it divides exactly by 11?
  36. 36.5/8 + 1/2 =
  37. 37.A hostel has enough food for 2 students for 13 days. How many days will the same food last for 13 students?
  38. 38.Find the LCM of 14, 2 and 7.
  39. 39.2 : 8 = 8 : ?
  40. 40.3 × (25 − 17) + 24 ÷ 2 =

Answer key

  1. 33
  2. 21
  3. 2
  4. 31
  5. 4/21
  6. 35
  7. 121
  8. 54
  9. 50
  10. 145
  11. 450
  12. 48
  13. 10
  14. 24.3
  15. 625
  16. 62
  17. 24
  18. 8
  19. 28
  20. 90
  21. 9.08
  22. 800
  23. 50
  24. 9
  25. 6
  26. 3
  27. 61
  28. 3
  29. 120
  30. 11
  31. 50
  32. 1/12
  33. 90
  34. 62
  35. 10
  36. 9/8
  37. 2
  38. 14
  39. 32
  40. 36

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