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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 209 · 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.What is the smallest number you must add to 251 so that it divides exactly by 11?
  2. 2.Round 31.66 to one decimal place. =
  3. 3.Round 22584 to the nearest hundred.
  4. 4.Find the HCF of 84 and 98.
  5. 5.2/9 − 1/7 =
  6. 6.What percent of 25 is 1?
  7. 7.7 × (11 − 8) + 36 ÷ 9 =
  8. 8.1.11 + 7.1 =
  9. 9.Find the LCM of 9, 13 and 6.
  10. 10.6.25 + 5.2 =
  11. 11.27 − 28 ÷ 7 × 4 =
  12. 12.Farhan scored 12 marks out of 20 in a test. What percentage did Farhan score?
  13. 13.Find the LCM of 10, 2 and 12.
  14. 14.31 − 8 ÷ 4 × 9 =
  15. 15.Which is closest to 897 × 82? (Round each number first.) (a) 720000 (b) 72000 (c) 144000 (d) 7200
  16. 16.Which is closest to 596 × 22? (Round each number first.) (a) 24000 (b) 12000 (c) 1200 (d) 120000
  17. 17.Two tanks hold 200 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.If 6 kites cost ₹174, how much do 3 kites cost (in ₹)?
  19. 19.9 : 5 = 36 : ?
  20. 20.The HCF of two numbers is 2 and their LCM is 20. One of the numbers is 10. What is the other number?
  21. 21.Find the HCF of 36 and 28.
  22. 22.63 ÷ 7 × 6 + 16 =
  23. 23.(9 + 15) × 5 − 26 =
  24. 24.A car goes 33 km on 3 litres of petrol. How far can it go on 18 litres (in km)?
  25. 25.3 painters can paint a school in 28 days. How many days would 7 painters take, working at the same speed?
  26. 26.If 5 erasers cost ₹80, how much do 4 erasers cost (in ₹)?
  27. 27.7 painters can paint a school in 16 days. How many days would 2 painters take, working at the same speed?
  28. 28.Divide ₹66 between Isha and Meera in the ratio 8 : 3. How much does Isha get (in ₹)?
  29. 29.31 + 3 × 5 − 26 =
  30. 30.Two tanks hold 60 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.A hall floor is 180 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  32. 32.Which of these numbers divides exactly by 9? (a) 2569 (b) 1942 (c) 4797 (d) 4198
  33. 33.1/2 × 2/3 =
  34. 34.The ratio of boys to girls in a class is 7 : 4. There are 63 boys. How many girls are there?
  35. 35.A car goes 32 km on 2 litres of petrol. How far can it go on 39 litres (in km)?
  36. 36.3/4 × 2/5 =
  37. 37.Find the HCF of 75 and 90.
  38. 38.6/7 − 2/4 =
  39. 39.Two tanks hold 100 litres and 75 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  40. 40.Diya scored 20 marks out of 50 in a test. What percentage did Diya score?

Answer key

  1. 2
  2. 31.7
  3. 22600
  4. 14
  5. 5/63
  6. 4
  7. 25
  8. 8.21
  9. 234
  10. 11.45
  11. 11
  12. 60
  13. 60
  14. 13
  15. 72000
  16. 12000
  17. 50
  18. 87
  19. 20
  20. 4
  21. 4
  22. 70
  23. 94
  24. 198
  25. 12
  26. 64
  27. 56
  28. 48
  29. 20
  30. 10
  31. 30
  32. 4797
  33. 1/3
  34. 36
  35. 624
  36. 3/10
  37. 15
  38. 5/14
  39. 25
  40. 40

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