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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 468 · 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 of these numbers divides exactly by 6? (a) 2238 (b) 8534 (c) 3212 (d) 6357
  2. 2.Find the LCM of 8, 11 and 2.
  3. 3.(19 + 10) × 3 − 3 =
  4. 4.If 3 erasers cost ₹96, how much do 7 erasers cost (in ₹)?
  5. 5.Which is closest to 198 × 88? (Round each number first.) (a) 180000 (b) 1800 (c) 36000 (d) 18000
  6. 6.The HCF of two numbers is 4 and their LCM is 288. One of the numbers is 32. What is the other number?
  7. 7.What is the smallest number you must add to 261 so that it divides exactly by 11?
  8. 8.Sneha takes 60 seconds and Ananya takes 54 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?
  9. 9.Aarav takes 40 seconds and Ishaan takes 30 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?
  10. 10.What is 1/2 of 8 kg?
  11. 11.9 × (10 − 8) + 45 ÷ 5 =
  12. 12.Which is closest to 199 × 32? (Round each number first.) (a) 60000 (b) 600 (c) 12000 (d) 6000
  13. 13.3/10 × 1/9 =
  14. 14.Write 1/2 as a percent.
  15. 15.36 ÷ 4 × 2 + 6 =
  16. 16.6/11 + 3/8 =
  17. 17.16.4 ÷ 2 =
  18. 18.A car goes 100 km on 4 litres of petrol. How far can it go on 12 litres (in km)?
  19. 19.A car goes 88 km on 11 litres of petrol. How far can it go on 40 litres (in km)?
  20. 20.15% of a number is 72. What is the number?
  21. 21.2/5 of 40 + 3 × 3 =
  22. 22.If 9 notebooks cost ₹306, how much do 17 notebooks cost (in ₹)?
  23. 23.The HCF of two numbers is 3 and their LCM is 45. One of the numbers is 9. What is the other number?
  24. 24.What is 1/6 of ₹132?
  25. 25.If 5 kg of rice costs ₹290, how many kg can you buy for ₹638?
  26. 26.Round 18.72 to one decimal place. =
  27. 27.Which is closest to 900 + 601 + 900? (a) 2500 (b) 2300 (c) 2400 (d) 2600
  28. 28.4 × (13 − 4) + 16 ÷ 4 =
  29. 29.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  30. 30.The HCF of two numbers is 3 and their LCM is 18. One of the numbers is 6. What is the other number?
  31. 31.Which is closest to 700 + 495 + 495? (a) 1800 (b) 1600 (c) 1900 (d) 1700
  32. 32.How many factors does 50 have?
  33. 33.The HCF of two numbers is 4 and their LCM is 160. One of the numbers is 20. What is the other number?
  34. 34.How many factors does 31 have?
  35. 35.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  36. 36.(8 + 7) × 3 − 5 =
  37. 37.Find the HCF of 21 and 12.
  38. 38.Which is closest to 1595 ÷ 39? (a) 80 (b) 40 (c) 20 (d) 400
  39. 39.What is 1/6 of 78 kg?
  40. 40.What is the smallest number you must take away from 121 so that it divides exactly by 6?

Answer key

  1. 2238
  2. 88
  3. 84
  4. 224
  5. 18000
  6. 36
  7. 3
  8. 540
  9. 120
  10. 4
  11. 27
  12. 6000
  13. 1/30
  14. 50
  15. 24
  16. 81/88
  17. 8.2
  18. 300
  19. 320
  20. 480
  21. 25
  22. 578
  23. 15
  24. 22
  25. 11
  26. 18.7
  27. 2400
  28. 40
  29. 72
  30. 9
  31. 1700
  32. 6
  33. 32
  34. 2
  35. 75
  36. 40
  37. 3
  38. 40
  39. 13
  40. 1

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