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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 563 · 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.Three temple bells ring every 15, 10 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.What is the smallest number you must take away from 997 so that it divides exactly by 3?
  3. 3.1/2 − 2/7 =
  4. 4.Write 1/2 as a percent.
  5. 5.The ratio of boys to girls in a class is 5 : 7. There are 15 boys. How many girls are there?
  6. 6.Round 29629 to the nearest thousand.
  7. 7.What is the smallest number you must add to 371 so that it divides exactly by 6?
  8. 8.Which of these numbers divides exactly by 4? (a) 8739 (b) 5708 (c) 1137 (d) 4667
  9. 9.2 painters can paint a school in 6 days. How many days would 6 painters take, working at the same speed?
  10. 10.6/11 × 1/2 =
  11. 11.27 ÷ 9 × 8 + 24 =
  12. 12.How many factors does 69 have?
  13. 13.Which of these numbers divides exactly by 8? (a) 1058 (b) 5237 (c) 9312 (d) 3611
  14. 14.9.1 × 4 =
  15. 15.A hostel has enough food for 9 students for 21 days. How many days will the same food last for 7 students?
  16. 16.Find the LCM of 8 and 6.
  17. 17.7.5 × 2 =
  18. 18.The ratio of boys to girls in a class is 2 : 3. There are 16 boys. How many girls are there?
  19. 19.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  20. 20.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  21. 21.What is the smallest number you must take away from 744 so that it divides exactly by 13?
  22. 22.Find the LCM of 2, 4 and 3.
  23. 23.If 12 pens cost ₹396, how much do 4 pens cost (in ₹)?
  24. 24.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 6, 9 or 15.
  25. 25.Which is closest to 503 × 21? (Round each number first.) (a) 100000 (b) 20000 (c) 1000 (d) 10000
  26. 26.Round 37203 to the nearest thousand.
  27. 27.Divide ₹148 between Rohan and Isha in the ratio 1 : 3. How much does Isha get (in ₹)?
  28. 28.Divide ₹322 between Saanvi and Rahul in the ratio 3 : 4. How much does Rahul get (in ₹)?
  29. 29.The HCF of two numbers is 9 and their LCM is 270. One of the numbers is 45. What is the other number?
  30. 30.Find the LCM of 7, 2 and 4.
  31. 31.7/10 − 2/3 =
  32. 32.What is the smallest number you must take away from 275 so that it divides exactly by 6?
  33. 33.What is the smallest number you must take away from 227 so that it divides exactly by 4?
  34. 34.If 4 kg of rice costs ₹208, how many kg can you buy for ₹364?
  35. 35.Find the HCF of 108 and 24.
  36. 36.Find the HCF of 35 and 20.
  37. 37.If 5 bottles of juice cost ₹20, how much do 7 bottles of juice cost (in ₹)?
  38. 38.A hall floor is 175 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  39. 39.The ratio of boys to girls in a class is 8 : 7. There are 24 boys. How many girls are there?
  40. 40.Find the smallest number bigger than 5 that leaves a remainder of 1 when divided by 5, 3 or 4.

Answer key

  1. 90
  2. 1
  3. 3/14
  4. 50
  5. 21
  6. 30000
  7. 1
  8. 5708
  9. 2
  10. 3/11
  11. 48
  12. 4
  13. 9312
  14. 36.4
  15. 27
  16. 24
  17. 15
  18. 24
  19. 27
  20. 63
  21. 3
  22. 12
  23. 132
  24. 93
  25. 10000
  26. 37000
  27. 111
  28. 184
  29. 54
  30. 28
  31. 1/30
  32. 5
  33. 3
  34. 7
  35. 12
  36. 5
  37. 28
  38. 42
  39. 21
  40. 61

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