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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 267 · 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.Which is closest to 703 × 42? (Round each number first.) (a) 2800 (b) 56000 (c) 28000 (d) 280000
  2. 2.29 − 27 ÷ 9 × 3 =
  3. 3.Two tanks hold 25 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.If 9 kg of rice costs ₹297, how many kg can you buy for ₹363?
  5. 5.A car goes 102 km on 6 litres of petrol. How far can it go on 7 litres (in km)?
  6. 6.How many factors does 81 have?
  7. 7.Round 36.13 to one decimal place. =
  8. 8.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  9. 9.Round 28408 to the nearest ten.
  10. 10.Three temple bells ring every 5, 15 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.120% of a number is 504. What is the number?
  12. 12.A car goes 75 km on 3 litres of petrol. How far can it go on 11 litres (in km)?
  13. 13.Find the LCM of 21 and 6.
  14. 14.10% of a number is 3. What is the number?
  15. 15.The ratio of boys to girls in a class is 1 : 4. There are 7 boys. How many girls are there?
  16. 16.Find the LCM of 7 and 5.
  17. 17.Which is closest to 696 × 39? (Round each number first.) (a) 56000 (b) 2800 (c) 280000 (d) 28000
  18. 18.Rohan takes 90 seconds and Kabir takes 50 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  19. 19.The ratio of boys to girls in a class is 6 : 1. There are 54 boys. How many girls are there?
  20. 20.Which is closest to 591 ÷ 31? (a) 40 (b) 200 (c) 10 (d) 20
  21. 21.Which is closest to 704 + 296 + 400? (a) 1500 (b) 1600 (c) 1400 (d) 1300
  22. 22.A car goes 220 km on 10 litres of petrol. How far can it go on 8 litres (in km)?
  23. 23.The HCF of two numbers is 4 and their LCM is 56. One of the numbers is 8. What is the other number?
  24. 24.20 − 24 ÷ 8 × 5 =
  25. 25.Which is closest to 2003 ÷ 49? (a) 400 (b) 20 (c) 80 (d) 40
  26. 26.What percent of 40 is 16?
  27. 27.Kavya scored 52 marks out of 80 in a test. What percentage did Kavya score?
  28. 28.If 11 pencil boxes cost ₹264, how much do 17 pencil boxes cost (in ₹)?
  29. 29.The ratio of boys to girls in a class is 9 : 5. There are 18 boys. How many girls are there?
  30. 30.Which of these numbers divides exactly by 6? (a) 7872 (b) 4682 (c) 2617 (d) 7834
  31. 31.How many factors does 45 have?
  32. 32.The ratio of boys to girls in a class is 1 : 3. There are 4 boys. How many girls are there?
  33. 33.2 painters can paint a school in 5 days. How many days would 5 painters take, working at the same speed?
  34. 34.40% of a number is 120. What is the number?
  35. 35.Find the LCM of 14, 5 and 3.
  36. 36.Meera scored 48 marks out of 50 in a test. What percentage did Meera score?
  37. 37.The HCF of two numbers is 4 and their LCM is 144. One of the numbers is 36. What is the other number?
  38. 38.What is 1/2 of 50 km?
  39. 39.Which is closest to 401 + 98 + 803? (a) 1500 (b) 1200 (c) 1300 (d) 1400
  40. 40.Find the HCF of 60 and 48.

Answer key

  1. 28000
  2. 20
  3. 5
  4. 11
  5. 119
  6. 5
  7. 36.1
  8. 144
  9. 28410
  10. 45
  11. 420
  12. 275
  13. 42
  14. 30
  15. 28
  16. 35
  17. 28000
  18. 450
  19. 9
  20. 20
  21. 1400
  22. 176
  23. 28
  24. 5
  25. 40
  26. 40
  27. 65
  28. 408
  29. 10
  30. 7872
  31. 6
  32. 12
  33. 2
  34. 300
  35. 210
  36. 96
  37. 16
  38. 25
  39. 1300
  40. 12

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