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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 430 · 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. 1.48 ÷ 4 × 9 + 10 =
  2. 2.Find the HCF of 126 and 98.
  3. 3.17.1 ÷ 9 =
  4. 4.What is the smallest number you must take away from 101 so that it divides exactly by 7?
  5. 5.How many factors does 20 have?
  6. 6.Find the HCF of 104 and 39.
  7. 7.Which is closest to 2104 ÷ 29? (a) 35 (b) 700 (c) 140 (d) 70
  8. 8.20% of a number is 83. What is the number?
  9. 9.89.1 ÷ 9 =
  10. 10.What is the smallest number you must add to 135 so that it divides exactly by 7?
  11. 11.Which is closest to 606 ÷ 19? (a) 60 (b) 300 (c) 15 (d) 30
  12. 12.8/10 + 2/4 =
  13. 13.43 − 12 ÷ 4 × 8 =
  14. 14.How many factors does 12 have?
  15. 15.Round 92343 to the nearest ten.
  16. 16.Find the LCM of 2 and 7.
  17. 17.(15 + 9) × 2 − 10 =
  18. 18.9 : 3 = 18 : ?
  19. 19.What is 150% of 108?
  20. 20.35 + 10 × 6 − 13 =
  21. 21.Write 47/50 as a percent.
  22. 22.Find the LCM of 3 and 4.
  23. 23.Rahul takes 36 seconds and Priya takes 90 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?
  24. 24.What is the smallest number you must add to 640 so that it divides exactly by 12?
  25. 25.If 7 mangoes cost ₹301, how much do 6 mangoes cost (in ₹)?
  26. 26.If 12 erasers cost ₹276, how much do 18 erasers cost (in ₹)?
  27. 27.If 10 pencil boxes cost ₹530, how much do 7 pencil boxes cost (in ₹)?
  28. 28.82 − 81 ÷ 9 × 6 =
  29. 29.Three temple bells ring every 6, 8 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.5 painters can paint a school in 22 days. How many days would 22 painters take, working at the same speed?
  31. 31.The HCF of two numbers is 4 and their LCM is 288. One of the numbers is 36. What is the other number?
  32. 32.9.8 × 6 =
  33. 33.The ratio of boys to girls in a class is 1 : 2. There are 8 boys. How many girls are there?
  34. 34.If 5 kites cost ₹240, how much do 15 kites cost (in ₹)?
  35. 35.Priya takes 80 seconds and Arjun takes 90 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?
  36. 36.The HCF of two numbers is 8 and their LCM is 504. One of the numbers is 72. What is the other number?
  37. 37.Find the HCF of 55 and 22.
  38. 38.Find the HCF of 49 and 63.
  39. 39.80% of a number is 228. What is the number?
  40. 40.A hostel has enough food for 2 students for 17 days. How many days will the same food last for 17 students?

Answer key

  1. 118
  2. 14
  3. 1.9
  4. 3
  5. 6
  6. 13
  7. 70
  8. 415
  9. 9.9
  10. 5
  11. 30
  12. 13/10
  13. 19
  14. 6
  15. 92340
  16. 14
  17. 38
  18. 6
  19. 162
  20. 82
  21. 94
  22. 12
  23. 180
  24. 8
  25. 258
  26. 414
  27. 371
  28. 28
  29. 72
  30. 5
  31. 32
  32. 58.8
  33. 16
  34. 720
  35. 720
  36. 56
  37. 11
  38. 7
  39. 285
  40. 2

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