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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 269 · 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. 1.3/11 − 1/7 =
  2. 2.The ratio of boys to girls in a class is 5 : 3. There are 10 boys. How many girls are there?
  3. 3.Which is closest to 405 + 495 + 398? (a) 1300 (b) 1400 (c) 1200 (d) 1500
  4. 4.Round 33779 to the nearest ten.
  5. 5.If 3 kg of rice costs ₹198, how many kg can you buy for ₹858?
  6. 6.The HCF of two numbers is 6 and their LCM is 36. One of the numbers is 18. What is the other number?
  7. 7.Find the LCM of 12, 7 and 3.
  8. 8.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 10, 9 or 4.
  9. 9.60 ÷ 6 × 2 + 5 =
  10. 10.Find the HCF of 18 and 81.
  11. 11.If 3 mangoes cost ₹147, how much do 10 mangoes cost (in ₹)?
  12. 12.A hostel has enough food for 6 students for 17 days. How many days will the same food last for 17 students?
  13. 13.Find the LCM of 35 and 10.
  14. 14.Find the LCM of 16 and 28.
  15. 15.Find the HCF of 75 and 105.
  16. 16.What is 15% of 140?
  17. 17.1/10 + 10/11 =
  18. 18.6 painters can paint a school in 24 days. How many days would 24 painters take, working at the same speed?
  19. 19.Write 47/50 as a percent.
  20. 20.11 painters can paint a school in 23 days. How many days would 23 painters take, working at the same speed?
  21. 21.Divide ₹230 between Aditya and Isha in the ratio 1 : 4. How much does Aditya get (in ₹)?
  22. 22.1/3 + 2/5 =
  23. 23.39 + 4 × 3 − 32 =
  24. 24.Find the HCF of 56 and 48.
  25. 25.12 + 9 × 5 − 6 =
  26. 26.Round 13731 to the nearest thousand.
  27. 27.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  28. 28.Which is closest to 197 × 31? (Round each number first.) (a) 600 (b) 6000 (c) 60000 (d) 12000
  29. 29.Find the LCM of 30 and 35.
  30. 30.38 − 24 ÷ 8 × 9 =
  31. 31.The HCF of two numbers is 4 and their LCM is 24. One of the numbers is 12. What is the other number?
  32. 32.1/2 − 2/12 =
  33. 33.What is the smallest number you must take away from 880 so that it divides exactly by 12?
  34. 34.Which is closest to 994 ÷ 51? (a) 10 (b) 20 (c) 200 (d) 40
  35. 35.If 9 kg of rice costs ₹306, how many kg can you buy for ₹272?
  36. 36.Pooja takes 72 seconds and Saanvi takes 40 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?
  37. 37.If 4 pencil boxes cost ₹240, how much do 14 pencil boxes cost (in ₹)?
  38. 38.Find the HCF of 15 and 10.
  39. 39.9 : 4 = 54 : ?
  40. 40.The ratio of boys to girls in a class is 9 : 7. There are 18 boys. How many girls are there?

Answer key

  1. 10/77
  2. 6
  3. 1300
  4. 33780
  5. 13
  6. 12
  7. 84
  8. 182
  9. 25
  10. 9
  11. 490
  12. 6
  13. 70
  14. 112
  15. 15
  16. 21
  17. 111/110
  18. 6
  19. 94
  20. 11
  21. 46
  22. 11/15
  23. 19
  24. 8
  25. 51
  26. 14000
  27. 27
  28. 6000
  29. 210
  30. 11
  31. 8
  32. 1/3
  33. 4
  34. 20
  35. 8
  36. 360
  37. 840
  38. 5
  39. 24
  40. 14

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