← Practice: number skills lesson New set →

Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 51 · 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.How many factors does 20 have?
  2. 2.12 painters can paint a school in 23 days. How many days would 23 painters take, working at the same speed?
  3. 3.75% of a number is 360. What is the number?
  4. 4.(14 + 18) × 2 − 7 =
  5. 5.What is 75% of 4?
  6. 6.How many factors does 78 have?
  7. 7.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  8. 8.If 8 erasers cost ₹480, how much do 6 erasers cost (in ₹)?
  9. 9.How many factors does 55 have?
  10. 10.Divide ₹220 between Ananya and Rahul in the ratio 3 : 2. How much does Ananya get (in ₹)?
  11. 11.Which is closest to 1402 ÷ 21? (a) 140 (b) 700 (c) 70 (d) 35
  12. 12.Divide ₹180 between Saanvi and Meera in the ratio 8 : 1. How much does Meera get (in ₹)?
  13. 13.If 8 kites cost ₹312, how much do 13 kites cost (in ₹)?
  14. 14.Three temple bells ring every 8, 30 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.Diya scored 11 marks out of 20 in a test. What percentage did Diya score?
  16. 16.Find the LCM of 15 and 25.
  17. 17.If 7 kg of rice costs ₹476, how many kg can you buy for ₹340?
  18. 18.32 ÷ 4 × 9 + 29 =
  19. 19.Priya takes 45 seconds and Rahul takes 50 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?
  20. 20.2 : 13 = 14 : ?
  21. 21.If 7 notebooks cost ₹210, how much do 8 notebooks cost (in ₹)?
  22. 22.What is the smallest number you must take away from 619 so that it divides exactly by 7?
  23. 23.Three temple bells ring every 12, 5 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Manav takes 40 seconds and Karan takes 50 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?
  25. 25.Find the smallest number bigger than 15 that leaves a remainder of 5 when divided by 6, 12 or 15.
  26. 26.A hall floor is 175 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.What is the smallest number you must add to 688 so that it divides exactly by 12?
  28. 28.42 + 7 × 10 − 23 =
  29. 29.8 : 6 = 16 : ?
  30. 30.Which is closest to 604 × 78? (Round each number first.) (a) 4800 (b) 480000 (c) 96000 (d) 48000
  31. 31.Divide ₹45 between Meera and Kavya in the ratio 2 : 3. How much does Meera get (in ₹)?
  32. 32.A hall floor is 140 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  33. 33.What percent of 25 is 18?
  34. 34.3.68 + 6.3 =
  35. 35.(5 + 7) × 3 − 2 =
  36. 36.The HCF of two numbers is 3 and their LCM is 168. One of the numbers is 21. What is the other number?
  37. 37.2 × (22 − 8) + 14 ÷ 2 =
  38. 38.The HCF of two numbers is 4 and their LCM is 140. One of the numbers is 28. What is the other number?
  39. 39.50% of a number is 113. What is the number?
  40. 40.Find the HCF of 84 and 96.

Answer key

  1. 6
  2. 12
  3. 480
  4. 57
  5. 3
  6. 8
  7. 32
  8. 360
  9. 4
  10. 132
  11. 70
  12. 20
  13. 507
  14. 120
  15. 55
  16. 75
  17. 5
  18. 101
  19. 450
  20. 91
  21. 240
  22. 3
  23. 60
  24. 200
  25. 65
  26. 28
  27. 8
  28. 89
  29. 12
  30. 48000
  31. 18
  32. 28
  33. 72
  34. 9.98
  35. 34
  36. 24
  37. 35
  38. 20
  39. 226
  40. 12

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