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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 49 · 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 LCM of 30 and 25.
  2. 2.Two tanks hold 140 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.If 5 pencil boxes cost ₹140, how much do 15 pencil boxes cost (in ₹)?
  4. 4.Which is closest to 404 × 29? (Round each number first.) (a) 24000 (b) 12000 (c) 1200 (d) 120000
  5. 5.Which is closest to 698 × 39? (Round each number first.) (a) 56000 (b) 2800 (c) 28000 (d) 280000
  6. 6.What percent of 200 is 130?
  7. 7.Which is closest to 802 ÷ 39? (a) 200 (b) 40 (c) 20 (d) 10
  8. 8.A car goes 110 km on 10 litres of petrol. How far can it go on 12 litres (in km)?
  9. 9.Which of these numbers divides exactly by 6? (a) 4388 (b) 9606 (c) 9830 (d) 5773
  10. 10.What is 1/2 of ₹58?
  11. 11.18 ÷ 2 × 2 + 5 =
  12. 12.32 − 15 ÷ 5 × 3 =
  13. 13.Find the LCM of 4, 2 and 7.
  14. 14.Round 43403 to the nearest ten.
  15. 15.Which is closest to 598 × 29? (Round each number first.) (a) 36000 (b) 18000 (c) 1800 (d) 180000
  16. 16.What percent of 250 is 240?
  17. 17.What is the smallest number you must add to 621 so that it divides exactly by 4?
  18. 18.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  19. 19.How many factors does 67 have?
  20. 20.Arjun scored 38 marks out of 40 in a test. What percentage did Arjun score?
  21. 21.What is the smallest number you must add to 886 so that it divides exactly by 13?
  22. 22.34 + 11 × 12 − 15 =
  23. 23.If 8 kg of rice costs ₹368, how many kg can you buy for ₹92?
  24. 24.If 8 kg of rice costs ₹504, how many kg can you buy for ₹567?
  25. 25.7.31 + 8.6 =
  26. 26.20 + 5 × 4 − 19 =
  27. 27.Divide ₹336 between Kabir and Arjun in the ratio 4 : 3. How much does Arjun get (in ₹)?
  28. 28.A hall floor is 420 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  29. 29.What is the smallest number you must add to 755 so that it divides exactly by 6?
  30. 30.Which is closest to 205 + 205 + 503? (a) 1100 (b) 1000 (c) 900 (d) 800
  31. 31.Three temple bells ring every 5, 4 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.1/2 of 12 + 6 × 3 =
  33. 33.A hall floor is 250 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  34. 34.12 ÷ 4 × 2 + 25 =
  35. 35.1/2 of 16 + 8 × 5 =
  36. 36.41.5 ÷ 5 =
  37. 37.Find the LCM of 54 and 24.
  38. 38.Saanvi takes 54 seconds and Sneha takes 48 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?
  39. 39.5 : 4 = 40 : ?
  40. 40.What is 50% of 24?

Answer key

  1. 150
  2. 20
  3. 420
  4. 12000
  5. 28000
  6. 65
  7. 20
  8. 132
  9. 9606
  10. 29
  11. 23
  12. 23
  13. 28
  14. 43400
  15. 18000
  16. 96
  17. 3
  18. 100
  19. 2
  20. 95
  21. 11
  22. 151
  23. 2
  24. 9
  25. 15.91
  26. 21
  27. 144
  28. 14
  29. 1
  30. 900
  31. 40
  32. 24
  33. 10
  34. 31
  35. 48
  36. 8.3
  37. 216
  38. 432
  39. 32
  40. 12

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