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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 289 · 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. 1.7.48 + 3.6 =
  2. 2.The HCF of two numbers is 7 and their LCM is 280. One of the numbers is 35. What is the other number?
  3. 3.Ananya takes 90 seconds and Rohan takes 80 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?
  4. 4.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 3, 8 or 4.
  5. 5.A hall floor is 160 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  6. 6.Round 71.59 to one decimal place. =
  7. 7.The ratio of boys to girls in a class is 3 : 1. There are 15 boys. How many girls are there?
  8. 8.2.1 × 8 =
  9. 9.Round 34.86 to one decimal place. =
  10. 10.Which is closest to 604 ÷ 19? (a) 300 (b) 60 (c) 15 (d) 30
  11. 11.Which is closest to 604 × 50? (Round each number first.) (a) 3000 (b) 60000 (c) 30000 (d) 300000
  12. 12.A hall floor is 60 cm long and 40 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.The HCF of two numbers is 8 and their LCM is 576. One of the numbers is 72. What is the other number?
  14. 14.Round 88.44 to one decimal place. =
  15. 15.Find the HCF of 104 and 91.
  16. 16.Round 22.72 to one decimal place. =
  17. 17.What is 1/4 of 64 km?
  18. 18.18 ÷ 3 × 4 + 24 =
  19. 19.Find the HCF of 105 and 75.
  20. 20.3 × (23 − 9) + 48 ÷ 6 =
  21. 21.A hall floor is 350 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  22. 22.12 ÷ 3 × 2 + 6 =
  23. 23.What is the smallest number you must add to 465 so that it divides exactly by 6?
  24. 24.5 : 2 = 10 : ?
  25. 25.Divide ₹273 between Farhan and Rohan in the ratio 2 : 5. How much does Rohan get (in ₹)?
  26. 26.Find the third proportional to 7 and 35 (that is, 7 : 35 = 35 : ?).
  27. 27.Three temple bells ring every 4, 5 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.Which of these numbers divides exactly by 4? (a) 4777 (b) 9680 (c) 9575 (d) 5734
  29. 29.How many factors does 21 have?
  30. 30.The ratio of boys to girls in a class is 5 : 1. There are 50 boys. How many girls are there?
  31. 31.What is the smallest number you must add to 119 so that it divides exactly by 12?
  32. 32.3.6 × 5 =
  33. 33.What is the smallest number you must take away from 242 so that it divides exactly by 6?
  34. 34.What is the smallest number you must add to 201 so that it divides exactly by 6?
  35. 35.How many factors does 40 have?
  36. 36.5 : 4 = 15 : ?
  37. 37.Write 3/10 as a percent.
  38. 38.If 3 kg of rice costs ₹69, how many kg can you buy for ₹253?
  39. 39.5.3 × 5 =
  40. 40.Divide ₹646 between Ananya and Rohan in the ratio 8 : 9. How much does Rohan get (in ₹)?

Answer key

  1. 11.08
  2. 56
  3. 720
  4. 26
  5. 12
  6. 71.6
  7. 5
  8. 16.8
  9. 34.9
  10. 30
  11. 30000
  12. 6
  13. 64
  14. 88.4
  15. 13
  16. 22.7
  17. 16
  18. 48
  19. 15
  20. 50
  21. 21
  22. 14
  23. 3
  24. 4
  25. 195
  26. 175
  27. 60
  28. 9680
  29. 4
  30. 10
  31. 1
  32. 18
  33. 2
  34. 3
  35. 8
  36. 12
  37. 30
  38. 11
  39. 26.5
  40. 342

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