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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 628 · 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 20 and 35.
  2. 2.Round 49360 to the nearest hundred.
  3. 3.A hall floor is 180 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  4. 4.How many factors does 21 have?
  5. 5.Sneha takes 54 seconds and Priya takes 30 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?
  6. 6.34 + 3 × 7 − 32 =
  7. 7.What is the smallest number you must add to 589 so that it divides exactly by 9?
  8. 8.Round 80466 to the nearest thousand.
  9. 9.Find the HCF of 12 and 20.
  10. 10.36 − 56 ÷ 8 × 4 =
  11. 11.(9 + 10) × 9 − 17 =
  12. 12.What is 15% of 380?
  13. 13.What is 120% of 575?
  14. 14.Find the LCM of 9, 14 and 3.
  15. 15.Which is closest to 901 ÷ 29? (a) 30 (b) 15 (c) 60 (d) 300
  16. 16.1/3 of 30 + 4 × 2 =
  17. 17.Rahul takes 54 seconds and Kavya takes 36 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?
  18. 18.Which is closest to 1204 ÷ 31? (a) 400 (b) 40 (c) 20 (d) 80
  19. 19.What is 50% of 336?
  20. 20.Find the HCF of 30 and 25.
  21. 21.9 : 8 = 36 : ?
  22. 22.A hall floor is 400 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.What is the smallest number you must take away from 509 so that it divides exactly by 11?
  24. 24.Which is closest to 296 × 68? (Round each number first.) (a) 2100 (b) 210000 (c) 42000 (d) 21000
  25. 25.What is the smallest number you must add to 689 so that it divides exactly by 11?
  26. 26.The HCF of two numbers is 9 and their LCM is 54. One of the numbers is 18. What is the other number?
  27. 27.How many factors does 32 have?
  28. 28.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  29. 29.Divide ₹162 between Diya and Priya in the ratio 2 : 7. How much does Diya get (in ₹)?
  30. 30.If 11 mangoes cost ₹594, how much do 5 mangoes cost (in ₹)?
  31. 31.Divide ₹135 between Vivaan and Tara in the ratio 8 : 7. How much does Tara get (in ₹)?
  32. 32.Write 1/2 as a percent.
  33. 33.Which is closest to 2091 ÷ 31? (a) 700 (b) 35 (c) 140 (d) 70
  34. 34.Find the LCM of 45 and 25.
  35. 35.3.61 + 5.9 =
  36. 36.The HCF of two numbers is 5 and their LCM is 150. One of the numbers is 30. What is the other number?
  37. 37.Three temple bells ring every 15, 30 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  38. 38.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  39. 39.A hall floor is 240 cm long and 200 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.Karan scored 4 marks out of 25 in a test. What percentage did Karan score?

Answer key

  1. 140
  2. 49400
  3. 30
  4. 4
  5. 270
  6. 23
  7. 5
  8. 80000
  9. 4
  10. 8
  11. 154
  12. 57
  13. 690
  14. 126
  15. 30
  16. 18
  17. 108
  18. 40
  19. 168
  20. 5
  21. 32
  22. 24
  23. 3
  24. 21000
  25. 4
  26. 27
  27. 6
  28. 8
  29. 36
  30. 270
  31. 63
  32. 50
  33. 70
  34. 225
  35. 9.51
  36. 25
  37. 60
  38. 112
  39. 30
  40. 16

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