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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 822 · 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. 1.1/3 of 6 + 7 × 6 =
  2. 2.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  3. 3.Round 98.26 to one decimal place. =
  4. 4.How many factors does 91 have?
  5. 5.Divide ₹901 between Rohan and Rahul in the ratio 8 : 9. How much does Rohan get (in ₹)?
  6. 6.Find the smallest number bigger than 15 that leaves a remainder of 5 when divided by 12, 15 or 9.
  7. 7.Write 1/4 as a percent.
  8. 8.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 8 or 3.
  9. 9.8 ÷ 4 × 7 + 10 =
  10. 10.Find the HCF of 30 and 36.
  11. 11.Find the LCM of 6 and 9.
  12. 12.Two tanks hold 75 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.A hostel has enough food for 8 students for 23 days. How many days will the same food last for 4 students?
  14. 14.78 − 72 ÷ 9 × 6 =
  15. 15.A car goes 108 km on 12 litres of petrol. How far can it go on 14 litres (in km)?
  16. 16.Rohan scored 5 marks out of 25 in a test. What percentage did Rohan score?
  17. 17.Round 40.93 to one decimal place. =
  18. 18.9 : 14 = 45 : ?
  19. 19.23.2 ÷ 8 =
  20. 20.Find the HCF of 56 and 42.
  21. 21.16 ÷ 2 × 7 + 2 =
  22. 22.Three temple bells ring every 5, 24 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.1/5 of 45 + 8 × 2 =
  24. 24.If 9 kg of rice costs ₹351, how many kg can you buy for ₹468?
  25. 25.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 5, 9 or 15.
  26. 26.The ratio of boys to girls in a class is 4 : 5. There are 32 boys. How many girls are there?
  27. 27.2 : 10 = 14 : ?
  28. 28.Which of these numbers divides exactly by 9? (a) 7551 (b) 2912 (c) 6263 (d) 8020
  29. 29.Priya takes 72 seconds and Zoya takes 80 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?
  30. 30.40% of a number is 230. What is the number?
  31. 31.Round 87.32 to one decimal place. =
  32. 32.Which is closest to 791 ÷ 39? (a) 200 (b) 40 (c) 10 (d) 20
  33. 33.Which of these numbers divides exactly by 8? (a) 3851 (b) 2008 (c) 7925 (d) 1149
  34. 34.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 9. What is the other number?
  35. 35.The HCF of two numbers is 7 and their LCM is 98. One of the numbers is 49. What is the other number?
  36. 36.Which of these numbers divides exactly by 8? (a) 7462 (b) 3070 (c) 9493 (d) 9552
  37. 37.9 painters can paint a school in 20 days. How many days would 6 painters take, working at the same speed?
  38. 38.If 9 notebooks cost ₹315, how much do 7 notebooks cost (in ₹)?
  39. 39.12 ÷ 2 × 6 + 25 =
  40. 40.88 ÷ 8 × 3 + 3 =

Answer key

  1. 44
  2. 24
  3. 98.3
  4. 4
  5. 424
  6. 185
  7. 25
  8. 121
  9. 24
  10. 6
  11. 18
  12. 15
  13. 46
  14. 30
  15. 126
  16. 20
  17. 40.9
  18. 70
  19. 2.9
  20. 14
  21. 58
  22. 120
  23. 25
  24. 12
  25. 46
  26. 40
  27. 70
  28. 7551
  29. 720
  30. 575
  31. 87.3
  32. 20
  33. 2008
  34. 6
  35. 14
  36. 9552
  37. 30
  38. 245
  39. 61
  40. 36

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