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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 310 · 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.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 6, 3 or 10.
  2. 2.The HCF of two numbers is 2 and their LCM is 24. One of the numbers is 8. What is the other number?
  3. 3.9.18 + 8.3 =
  4. 4.Divide ₹140 between Isha and Rohan in the ratio 5 : 9. How much does Rohan get (in ₹)?
  5. 5.What is 150% of 136?
  6. 6.Which is closest to 602 + 301 + 299? (a) 1100 (b) 1400 (c) 1300 (d) 1200
  7. 7.Which is closest to 898 × 72? (Round each number first.) (a) 63000 (b) 126000 (c) 630000 (d) 6300
  8. 8.8.82 + 4.9 =
  9. 9.A car goes 63 km on 7 litres of petrol. How far can it go on 35 litres (in km)?
  10. 10.What is the smallest number you must add to 654 so that it divides exactly by 9?
  11. 11.3 painters can paint a school in 20 days. How many days would 10 painters take, working at the same speed?
  12. 12.What is 1/2 of 26 km?
  13. 13.Find the HCF of 63 and 72.
  14. 14.3/8 + 1/3 =
  15. 15.Find the LCM of 6 and 5.
  16. 16.Find the LCM of 9 and 4.
  17. 17.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  18. 18.What is 10% of 460?
  19. 19.7 painters can paint a school in 25 days. How many days would 5 painters take, working at the same speed?
  20. 20.Rahul takes 30 seconds and Kabir takes 50 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?
  21. 21.Which is closest to 201 × 42? (Round each number first.) (a) 800 (b) 16000 (c) 8000 (d) 80000
  22. 22.Rohan takes 60 seconds and Meera takes 50 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?
  23. 23.8 × (28 − 16) + 24 ÷ 2 =
  24. 24.Write 13/25 as a percent.
  25. 25.Which is closest to 205 + 95 + 399? (a) 700 (b) 800 (c) 600 (d) 900
  26. 26.What is the smallest number you must add to 712 so that it divides exactly by 11?
  27. 27.Round 97.71 to one decimal place. =
  28. 28.Which of these numbers divides exactly by 6? (a) 8267 (b) 5518 (c) 1404 (d) 5403
  29. 29.4/7 − 2/5 =
  30. 30.Three temple bells ring every 9, 4 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.Find the smallest number bigger than 8 that leaves a remainder of 1 when divided by 4, 5 or 8.
  32. 32.Which is closest to 1493 ÷ 49? (a) 30 (b) 300 (c) 15 (d) 60
  33. 33.13.5 ÷ 3 =
  34. 34.What is the smallest number you must add to 811 so that it divides exactly by 4?
  35. 35.Divide ₹252 between Sneha and Priya in the ratio 5 : 1. How much does Sneha get (in ₹)?
  36. 36.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 9, 3 or 4.
  37. 37.Three temple bells ring every 24, 9 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.1.19 + 9.2 =
  39. 39.8.62 + 2.5 =
  40. 40.If 5 pens cost ₹40, how much do 7 pens cost (in ₹)?

Answer key

  1. 31
  2. 6
  3. 17.48
  4. 90
  5. 204
  6. 1200
  7. 63000
  8. 13.72
  9. 315
  10. 3
  11. 6
  12. 13
  13. 9
  14. 17/24
  15. 30
  16. 36
  17. 63
  18. 46
  19. 35
  20. 150
  21. 8000
  22. 300
  23. 108
  24. 52
  25. 700
  26. 3
  27. 97.7
  28. 1404
  29. 6/35
  30. 72
  31. 41
  32. 30
  33. 4.5
  34. 1
  35. 210
  36. 37
  37. 72
  38. 10.39
  39. 11.12
  40. 56

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