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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 207 · 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. 1.1/9 + 2/6 =
  2. 2.The ratio of boys to girls in a class is 3 : 5. There are 15 boys. How many girls are there?
  3. 3.What is the smallest number you must add to 285 so that it divides exactly by 6?
  4. 4.Find the HCF of 24 and 27.
  5. 5.The ratio of boys to girls in a class is 3 : 4. There are 27 boys. How many girls are there?
  6. 6.45 ÷ 9 × 9 + 1 =
  7. 7.Three temple bells ring every 30, 18 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.If 7 pencil boxes cost ₹217, how much do 12 pencil boxes cost (in ₹)?
  9. 9.Which of these numbers divides exactly by 8? (a) 3287 (b) 8959 (c) 6118 (d) 7584
  10. 10.Round 44569 to the nearest ten.
  11. 11.The HCF of two numbers is 9 and their LCM is 315. One of the numbers is 63. What is the other number?
  12. 12.36 − 16 ÷ 4 × 3 =
  13. 13.(20 + 13) × 5 − 1 =
  14. 14.The HCF of two numbers is 9 and their LCM is 648. One of the numbers is 72. What is the other number?
  15. 15.4/5 of 45 + 6 × 7 =
  16. 16.The ratio of boys to girls in a class is 5 : 7. There are 10 boys. How many girls are there?
  17. 17.8 : 4 = 48 : ?
  18. 18.Which is closest to 904 ÷ 29? (a) 30 (b) 60 (c) 15 (d) 300
  19. 19.Two tanks hold 150 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.A car goes 125 km on 5 litres of petrol. How far can it go on 18 litres (in km)?
  21. 21.Three temple bells ring every 12, 18 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.If 9 kg of rice costs ₹342, how many kg can you buy for ₹418?
  23. 23.Tara takes 90 seconds and Kabir takes 40 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?
  24. 24.Which is closest to 801 + 599 + 596? (a) 2100 (b) 1900 (c) 2200 (d) 2000
  25. 25.37 − 14 ÷ 7 × 4 =
  26. 26.A hall floor is 210 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.A hostel has enough food for 7 students for 10 days. How many days will the same food last for 14 students?
  28. 28.10% of a number is 53. What is the number?
  29. 29.Find the LCM of 4, 8 and 14.
  30. 30.7.2 × 4 =
  31. 31.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 12, 5 or 9.
  32. 32.9/10 + 2/7 =
  33. 33.What percent of 200 is 54?
  34. 34.What is the smallest number you must take away from 630 so that it divides exactly by 13?
  35. 35.Three temple bells ring every 30, 4 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.5/9 × 3/6 =
  37. 37.Which is closest to 2496 ÷ 51? (a) 50 (b) 25 (c) 500 (d) 100
  38. 38.Divide ₹442 between Isha and Rohan in the ratio 8 : 9. How much does Rohan get (in ₹)?
  39. 39.Find the HCF of 40 and 56.
  40. 40.The HCF of two numbers is 7 and their LCM is 70. One of the numbers is 35. What is the other number?

Answer key

  1. 4/9
  2. 25
  3. 3
  4. 3
  5. 36
  6. 46
  7. 90
  8. 372
  9. 7584
  10. 44570
  11. 45
  12. 24
  13. 164
  14. 81
  15. 78
  16. 14
  17. 24
  18. 30
  19. 50
  20. 450
  21. 36
  22. 11
  23. 360
  24. 2000
  25. 29
  26. 14
  27. 5
  28. 530
  29. 56
  30. 28.8
  31. 183
  32. 83/70
  33. 27
  34. 6
  35. 60
  36. 5/18
  37. 50
  38. 234
  39. 8
  40. 14

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