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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 643 · 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.Three temple bells ring every 10, 24 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Three temple bells ring every 20, 30 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.3.2 × 2 =
  4. 4.Find the LCM of 3, 14 and 12.
  5. 5.Which is closest to 803 × 49? (Round each number first.) (a) 400000 (b) 4000 (c) 40000 (d) 80000
  6. 6.If 9 bottles of juice cost ₹225, how much do 2 bottles of juice cost (in ₹)?
  7. 7.Which is closest to 1605 ÷ 41? (a) 40 (b) 400 (c) 20 (d) 80
  8. 8.What is 5/9 of 162 kg?
  9. 9.Dev takes 60 seconds and Karan takes 40 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. 10.25% of a number is 54. What is the number?
  11. 11.Which of these numbers divides exactly by 8? (a) 1150 (b) 3448 (c) 1429 (d) 1595
  12. 12.4/7 of 56 + 8 × 8 =
  13. 13.Divide ₹308 between Sneha and Isha in the ratio 9 : 5. How much does Sneha get (in ₹)?
  14. 14.Which is closest to 802 × 92? (Round each number first.) (a) 144000 (b) 72000 (c) 720000 (d) 7200
  15. 15.How many factors does 45 have?
  16. 16.If 5 mangoes cost ₹140, how much do 14 mangoes cost (in ₹)?
  17. 17.How many factors does 38 have?
  18. 18.Round 48077 to the nearest ten.
  19. 19.Divide ₹385 between Nisha and Arjun in the ratio 9 : 2. How much does Nisha get (in ₹)?
  20. 20.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?
  21. 21.What percent of 250 is 35?
  22. 22.Find the HCF of 32 and 20.
  23. 23.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 56. What is the other number?
  24. 24.How many factors does 80 have?
  25. 25.Find the HCF of 28 and 42.
  26. 26.Write 7/20 as a percent.
  27. 27.1/4 × 1/3 =
  28. 28.75% of a number is 330. What is the number?
  29. 29.Which of these numbers divides exactly by 11? (a) 8087 (b) 1979 (c) 8679 (d) 2634
  30. 30.A car goes 136 km on 8 litres of petrol. How far can it go on 23 litres (in km)?
  31. 31.2 painters can paint a school in 17 days. How many days would 17 painters take, working at the same speed?
  32. 32.What is the smallest number you must take away from 949 so that it divides exactly by 4?
  33. 33.Round 68567 to the nearest thousand.
  34. 34.A hostel has enough food for 12 students for 5 days. How many days will the same food last for 20 students?
  35. 35.Two tanks hold 160 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.71 − 14 ÷ 2 × 6 =
  37. 37.Which of these numbers divides exactly by 4? (a) 1990 (b) 6064 (c) 5485 (d) 4721
  38. 38.Which of these numbers divides exactly by 6? (a) 4365 (b) 6192 (c) 9285 (d) 2987
  39. 39.8 × (17 − 5) + 12 ÷ 2 =
  40. 40.Sneha scored 18 marks out of 20 in a test. What percentage did Sneha score?

Answer key

  1. 120
  2. 60
  3. 6.4
  4. 84
  5. 40000
  6. 50
  7. 40
  8. 90
  9. 120
  10. 216
  11. 3448
  12. 96
  13. 198
  14. 72000
  15. 6
  16. 392
  17. 4
  18. 48080
  19. 315
  20. 10
  21. 14
  22. 4
  23. 16
  24. 10
  25. 14
  26. 35
  27. 1/12
  28. 440
  29. 8679
  30. 391
  31. 2
  32. 1
  33. 69000
  34. 3
  35. 40
  36. 29
  37. 6064
  38. 6192
  39. 102
  40. 90

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