← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 300 · 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. 1.50% of a number is 70. What is the number?
  2. 2.Which is closest to 803 × 78? (Round each number first.) (a) 128000 (b) 640000 (c) 6400 (d) 64000
  3. 3.Three temple bells ring every 12, 6 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.The HCF of two numbers is 8 and their LCM is 240. One of the numbers is 40. What is the other number?
  5. 5.5 : 3 = 15 : ?
  6. 6.Which of these numbers divides exactly by 8? (a) 6920 (b) 8809 (c) 7278 (d) 1281
  7. 7.Which is closest to 398 ÷ 19? (a) 200 (b) 10 (c) 20 (d) 40
  8. 8.37 + 5 × 5 − 33 =
  9. 9.What is 4/5 of 10 km?
  10. 10.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 16. What is the other number?
  11. 11.Which is closest to 907 ÷ 31? (a) 60 (b) 300 (c) 15 (d) 30
  12. 12.Which of these numbers divides exactly by 4? (a) 2976 (b) 9053 (c) 9558 (d) 9805
  13. 13.Three temple bells ring every 6, 4 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  14. 14.2.59 + 8.7 =
  15. 15.What is the smallest number you must take away from 417 so that it divides exactly by 8?
  16. 16.Two tanks hold 280 litres and 160 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.Manav scored 2 marks out of 25 in a test. What percentage did Manav score?
  18. 18.12% of a number is 54. What is the number?
  19. 19.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  20. 20.What is 3/7 of 14 students?
  21. 21.What is the smallest number you must add to 302 so that it divides exactly by 13?
  22. 22.Meera takes 36 seconds and Arjun 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?
  23. 23.2 : 9 = 8 : ?
  24. 24.Find the LCM of 12 and 32.
  25. 25.Kavya scored 17 marks out of 20 in a test. What percentage did Kavya score?
  26. 26.What is 1/7 of 63 km?
  27. 27.Saanvi takes 72 seconds and Ananya 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?
  28. 28.25.6 ÷ 8 =
  29. 29.28 + 8 × 10 − 22 =
  30. 30.Round 20.08 to one decimal place. =
  31. 31.Find the LCM of 8, 6 and 4.
  32. 32.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  33. 33.Write 3/4 as a percent.
  34. 34.How many factors does 97 have?
  35. 35.If 6 mangoes cost ₹48, how much do 17 mangoes cost (in ₹)?
  36. 36.What is the smallest number you must add to 632 so that it divides exactly by 6?
  37. 37.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?
  38. 38.What is 2/3 of 12 kg?
  39. 39.Find the HCF of 30 and 25.
  40. 40.12 painters can paint a school in 11 days. How many days would 3 painters take, working at the same speed?

Answer key

  1. 140
  2. 64000
  3. 60
  4. 48
  5. 9
  6. 6920
  7. 20
  8. 29
  9. 8
  10. 56
  11. 30
  12. 2976
  13. 36
  14. 11.29
  15. 1
  16. 40
  17. 8
  18. 450
  19. 20
  20. 6
  21. 10
  22. 720
  23. 36
  24. 96
  25. 85
  26. 9
  27. 144
  28. 3.2
  29. 86
  30. 20.1
  31. 24
  32. 45
  33. 75
  34. 2
  35. 136
  36. 4
  37. 10
  38. 8
  39. 5
  40. 44

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude