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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 651 · 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.A hall floor is 200 cm long and 125 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  2. 2.Divide ₹91 between Dev and Tara in the ratio 5 : 8. How much does Dev get (in ₹)?
  3. 3.How many factors does 78 have?
  4. 4.Write 1/2 as a percent.
  5. 5.Which is closest to 502 × 91? (Round each number first.) (a) 4500 (b) 90000 (c) 45000 (d) 450000
  6. 6.1/3 × 3/11 =
  7. 7.What percent of 40 is 36?
  8. 8.Which is closest to 700 × 69? (Round each number first.) (a) 4900 (b) 98000 (c) 49000 (d) 490000
  9. 9.Which is closest to 301 × 28? (Round each number first.) (a) 9000 (b) 18000 (c) 900 (d) 90000
  10. 10.Three temple bells ring every 18, 30 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.9 painters can paint a school in 22 days. How many days would 22 painters take, working at the same speed?
  12. 12.Find the smallest number bigger than 5 that leaves a remainder of 1 when divided by 5, 4 or 3.
  13. 13.Find the LCM of 10 and 15.
  14. 14.5/8 − 2/6 =
  15. 15.Divide ₹155 between Diya and Farhan in the ratio 3 : 2. How much does Diya get (in ₹)?
  16. 16.A hall floor is 175 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.How many factors does 70 have?
  18. 18.4.07 + 3.9 =
  19. 19.Write 7/20 as a percent.
  20. 20.Round 77.26 to one decimal place. =
  21. 21.9 : 12 = 18 : ?
  22. 22.27 + 10 × 4 − 6 =
  23. 23.Which is closest to 2002 ÷ 51? (a) 40 (b) 20 (c) 400 (d) 80
  24. 24.What is the smallest number you must take away from 885 so that it divides exactly by 7?
  25. 25.25.8 ÷ 3 =
  26. 26.Find the LCM of 42 and 30.
  27. 27.6/12 − 1/4 =
  28. 28.What is the smallest number you must take away from 243 so that it divides exactly by 13?
  29. 29.A car goes 180 km on 10 litres of petrol. How far can it go on 2 litres (in km)?
  30. 30.Which is closest to 1606 ÷ 41? (a) 400 (b) 80 (c) 20 (d) 40
  31. 31.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 12, 5 or 6.
  32. 32.A car goes 176 km on 11 litres of petrol. How far can it go on 39 litres (in km)?
  33. 33.15 ÷ 6 =
  34. 34.If 3 kg of rice costs ₹270, how many kg can you buy for ₹450?
  35. 35.What is the smallest number you must add to 367 so that it divides exactly by 4?
  36. 36.What is 1/3 of 21 kg?
  37. 37.1/2 + 3/9 =
  38. 38.11 : 5 = 55 : ?
  39. 39.The HCF of two numbers is 6 and their LCM is 126. One of the numbers is 18. What is the other number?
  40. 40.What is the smallest number you must add to 206 so that it divides exactly by 11?

Answer key

  1. 40
  2. 35
  3. 8
  4. 50
  5. 45000
  6. 1/11
  7. 90
  8. 49000
  9. 9000
  10. 90
  11. 9
  12. 61
  13. 30
  14. 7/24
  15. 93
  16. 42
  17. 8
  18. 7.97
  19. 35
  20. 77.3
  21. 24
  22. 61
  23. 40
  24. 3
  25. 8.6
  26. 210
  27. 1/4
  28. 9
  29. 36
  30. 40
  31. 61
  32. 624
  33. 2.5
  34. 5
  35. 1
  36. 7
  37. 5/6
  38. 25
  39. 42
  40. 3

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