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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 144 · 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 68 have?
  2. 2.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 3 or 6.
  3. 3.Find the HCF of 80 and 70.
  4. 4.3/5 − 2/6 =
  5. 5.Write 1/10 as a percent.
  6. 6.1/5 × 2/7 =
  7. 7.A hall floor is 150 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.6 painters can paint a school in 9 days. How many days would 9 painters take, working at the same speed?
  9. 9.41 + 8 × 4 − 3 =
  10. 10.If 9 kg of rice costs ₹189, how many kg can you buy for ₹84?
  11. 11.The HCF of two numbers is 4 and their LCM is 288. One of the numbers is 36. What is the other number?
  12. 12.What is 20% of 70?
  13. 13.Find the HCF of 56 and 40.
  14. 14.Three temple bells ring every 24, 5 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.60 ÷ 5 × 6 + 2 =
  16. 16.12.2 ÷ 2 =
  17. 17.Find the LCM of 6, 3 and 14.
  18. 18.The HCF of two numbers is 7 and their LCM is 252. One of the numbers is 28. What is the other number?
  19. 19.Diya takes 40 seconds and Priya takes 45 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. 20.3.24 + 2.6 =
  21. 21.Divide ₹111 between Kavya and Rohan in the ratio 1 : 2. How much does Rohan get (in ₹)?
  22. 22.Dev takes 36 seconds and Nisha 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?
  23. 23.Find the smallest number bigger than 6 that leaves a remainder of 1 when divided by 6, 4 or 5.
  24. 24.What percent of 250 is 115?
  25. 25.What is the smallest number you must take away from 758 so that it divides exactly by 4?
  26. 26.What is the smallest number you must add to 285 so that it divides exactly by 6?
  27. 27.8 : 6 = 16 : ?
  28. 28.Write 3/5 as a percent.
  29. 29.How many factors does 28 have?
  30. 30.What percent of 400 is 96?
  31. 31.Which of these numbers divides exactly by 3? (a) 7079 (b) 9389 (c) 6634 (d) 4911
  32. 32.The HCF of two numbers is 2 and their LCM is 90. One of the numbers is 18. What is the other number?
  33. 33.What is the smallest number you must add to 358 so that it divides exactly by 12?
  34. 34.How many factors does 51 have?
  35. 35.Which is closest to 603 × 18? (Round each number first.) (a) 120000 (b) 24000 (c) 12000 (d) 1200
  36. 36.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 9, 4 or 15.
  37. 37.9/10 − 3/4 =
  38. 38.30 + 5 × 8 − 6 =
  39. 39.5.1 × 2 =
  40. 40.6/7 of 28 + 3 × 7 =

Answer key

  1. 6
  2. 31
  3. 10
  4. 4/15
  5. 10
  6. 2/35
  7. 15
  8. 6
  9. 70
  10. 4
  11. 32
  12. 14
  13. 8
  14. 120
  15. 74
  16. 6.1
  17. 42
  18. 63
  19. 360
  20. 5.84
  21. 74
  22. 144
  23. 61
  24. 46
  25. 2
  26. 3
  27. 12
  28. 60
  29. 6
  30. 24
  31. 4911
  32. 10
  33. 2
  34. 4
  35. 12000
  36. 181
  37. 3/20
  38. 64
  39. 10.2
  40. 45

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