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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 41 · 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.The HCF of two numbers is 8 and their LCM is 96. One of the numbers is 24. What is the other number?
  2. 2.The HCF of two numbers is 7 and their LCM is 196. One of the numbers is 28. What is the other number?
  3. 3.Round 82.56 to one decimal place. =
  4. 4.Which is closest to 503 + 705 + 104? (a) 1300 (b) 1200 (c) 1500 (d) 1400
  5. 5.Which is closest to 501 × 92? (Round each number first.) (a) 450000 (b) 90000 (c) 45000 (d) 4500
  6. 6.Find the LCM of 21 and 18.
  7. 7.Find the LCM of 14 and 12.
  8. 8.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 10, 3 or 12.
  9. 9.How many factors does 93 have?
  10. 10.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  11. 11.Find the LCM of 3 and 2.
  12. 12.Find the LCM of 4 and 5.
  13. 13.What percent of 80 is 76?
  14. 14.35.2 ÷ 4 =
  15. 15.The HCF of two numbers is 4 and their LCM is 112. One of the numbers is 16. What is the other number?
  16. 16.5/9 of 99 + 8 × 4 =
  17. 17.Which is closest to 1597 ÷ 39? (a) 40 (b) 20 (c) 400 (d) 80
  18. 18.What percent of 200 is 96?
  19. 19.Arjun takes 60 seconds and Meera takes 75 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?
  20. 20.A car goes 162 km on 9 litres of petrol. How far can it go on 16 litres (in km)?
  21. 21.If 12 pens cost ₹492, how much do 13 pens cost (in ₹)?
  22. 22.(9 + 2) × 2 − 2 =
  23. 23.Find the smallest number bigger than 6 that leaves a remainder of 1 when divided by 6, 4 or 3.
  24. 24.The HCF of two numbers is 4 and their LCM is 168. One of the numbers is 28. What is the other number?
  25. 25.3.2 × 5 =
  26. 26.8 × (22 − 13) + 90 ÷ 9 =
  27. 27.(8 + 7) × 4 − 8 =
  28. 28.(18 + 14) × 2 − 10 =
  29. 29.If 6 cricket balls cost ₹276, how much do 7 cricket balls cost (in ₹)?
  30. 30.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 10, 12 or 5.
  31. 31.Which is closest to 402 × 58? (Round each number first.) (a) 2400 (b) 24000 (c) 48000 (d) 240000
  32. 32.A car goes 78 km on 6 litres of petrol. How far can it go on 30 litres (in km)?
  33. 33.How many factors does 21 have?
  34. 34.A hall floor is 420 cm long and 360 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  35. 35.Find the LCM of 6 and 27.
  36. 36.What is 30% of 390?
  37. 37.What is the smallest number you must add to 425 so that it divides exactly by 12?
  38. 38.(2 + 17) × 7 − 6 =
  39. 39.2/12 + 5/11 =
  40. 40.If 3 kg of rice costs ₹264, how many kg can you buy for ₹792?

Answer key

  1. 32
  2. 49
  3. 82.6
  4. 1300
  5. 45000
  6. 126
  7. 84
  8. 62
  9. 4
  10. 32
  11. 6
  12. 20
  13. 95
  14. 8.8
  15. 28
  16. 87
  17. 40
  18. 48
  19. 300
  20. 288
  21. 533
  22. 20
  23. 13
  24. 24
  25. 16
  26. 82
  27. 52
  28. 54
  29. 322
  30. 64
  31. 24000
  32. 390
  33. 4
  34. 42
  35. 54
  36. 117
  37. 7
  38. 127
  39. 41/66
  40. 9

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