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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 584 · 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.(8 + 10) × 3 − 17 =
  2. 2.Which is closest to 203 × 52? (Round each number first.) (a) 10000 (b) 1000 (c) 20000 (d) 100000
  3. 3.The HCF of two numbers is 2 and their LCM is 84. One of the numbers is 12. What is the other number?
  4. 4.2 : 13 = 8 : ?
  5. 5.Find the HCF of 105 and 45.
  6. 6.What is the smallest number you must add to 256 so that it divides exactly by 7?
  7. 7.How many factors does 45 have?
  8. 8.What is the smallest number you must add to 230 so that it divides exactly by 9?
  9. 9.A hall floor is 125 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.23 − 35 ÷ 7 × 2 =
  11. 11.If 4 erasers cost ₹128, how much do 15 erasers cost (in ₹)?
  12. 12.Find the LCM of 20 and 25.
  13. 13.A hostel has enough food for 11 students for 21 days. How many days will the same food last for 21 students?
  14. 14.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 4, 8 or 3.
  15. 15.1/12 × 1/2 =
  16. 16.If 6 notebooks cost ₹144, how much do 16 notebooks cost (in ₹)?
  17. 17.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 8, 9 or 12.
  18. 18.If 6 bottles of juice cost ₹114, how much do 12 bottles of juice cost (in ₹)?
  19. 19.3/4 − 1/5 =
  20. 20.Which is closest to 200 × 78? (Round each number first.) (a) 160000 (b) 1600 (c) 16000 (d) 32000
  21. 21.Which is closest to 504 × 31? (Round each number first.) (a) 30000 (b) 150000 (c) 15000 (d) 1500
  22. 22.13.2 ÷ 3 =
  23. 23.What is the smallest number you must take away from 105 so that it divides exactly by 6?
  24. 24.(6 + 7) × 8 − 5 =
  25. 25.Aarav scored 1 marks out of 20 in a test. What percentage did Aarav score?
  26. 26.3.48 + 1.7 =
  27. 27.2.4 × 4 =
  28. 28.A car goes 84 km on 7 litres of petrol. How far can it go on 26 litres (in km)?
  29. 29.What is the smallest number you must add to 227 so that it divides exactly by 7?
  30. 30.Find the LCM of 30 and 36.
  31. 31.(16 + 13) × 9 − 30 =
  32. 32.Which is closest to 401 + 595 + 704? (a) 1900 (b) 1600 (c) 1800 (d) 1700
  33. 33.120% of a number is 96. What is the number?
  34. 34.Which is closest to 399 × 30? (Round each number first.) (a) 120000 (b) 1200 (c) 24000 (d) 12000
  35. 35.25% of a number is 148. What is the number?
  36. 36.Find the HCF of 45 and 60.
  37. 37.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  38. 38.Three temple bells ring every 8, 6 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.What is 50% of 102?
  40. 40.Divide ₹344 between Kabir and Meera in the ratio 3 : 5. How much does Meera get (in ₹)?

Answer key

  1. 37
  2. 10000
  3. 14
  4. 52
  5. 15
  6. 3
  7. 6
  8. 4
  9. 15
  10. 13
  11. 480
  12. 100
  13. 11
  14. 26
  15. 1/24
  16. 384
  17. 75
  18. 228
  19. 11/20
  20. 16000
  21. 15000
  22. 4.4
  23. 3
  24. 99
  25. 5
  26. 5.18
  27. 9.6
  28. 312
  29. 4
  30. 180
  31. 231
  32. 1700
  33. 80
  34. 12000
  35. 592
  36. 15
  37. 8
  38. 120
  39. 51
  40. 215

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