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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 895 · 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.Round 44014 to the nearest thousand.
  2. 2.6 × (25 − 6) + 24 ÷ 8 =
  3. 3.A hostel has enough food for 3 students for 21 days. How many days will the same food last for 21 students?
  4. 4.Find the LCM of 4, 7 and 6.
  5. 5.Round 51.83 to one decimal place. =
  6. 6.A car goes 32 km on 4 litres of petrol. How far can it go on 3 litres (in km)?
  7. 7.12 : 14 = 36 : ?
  8. 8.If 5 kg of rice costs ₹225, how many kg can you buy for ₹630?
  9. 9.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 5 or 4.
  10. 10.A hall floor is 420 cm long and 240 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  11. 11.A hall floor is 480 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  12. 12.Divide ₹35 between Ananya and Kabir in the ratio 2 : 3. How much does Ananya get (in ₹)?
  13. 13.What is 50% of 442?
  14. 14.16 ÷ 8 × 8 + 17 =
  15. 15.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 9, 12 or 4.
  16. 16.29 + 11 × 11 − 4 =
  17. 17.What percent of 400 is 316?
  18. 18.Which is closest to 796 × 28? (Round each number first.) (a) 240000 (b) 2400 (c) 48000 (d) 24000
  19. 19.If 6 mangoes cost ₹270, how much do 9 mangoes cost (in ₹)?
  20. 20.5/9 of 18 + 4 × 3 =
  21. 21.(19 + 6) × 8 − 1 =
  22. 22.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  23. 23.6 : 11 = 18 : ?
  24. 24.11 + 4 × 5 − 4 =
  25. 25.10 painters can paint a school in 10 days. How many days would 20 painters take, working at the same speed?
  26. 26.Find the LCM of 7 and 3.
  27. 27.Find the LCM of 10, 2 and 15.
  28. 28.9 painters can paint a school in 6 days. How many days would 3 painters take, working at the same speed?
  29. 29.4/5 + 1/2 =
  30. 30.What is the smallest number you must add to 380 so that it divides exactly by 3?
  31. 31.A hall floor is 135 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  32. 32.4.4 ÷ 4 =
  33. 33.Find the HCF of 12 and 54.
  34. 34.What percent of 250 is 120?
  35. 35.Divide ₹378 between Kabir and Rahul in the ratio 5 : 4. How much does Rahul get (in ₹)?
  36. 36.The HCF of two numbers is 8 and their LCM is 144. One of the numbers is 72. What is the other number?
  37. 37.4/8 + 4/7 =
  38. 38.7 : 4 = 28 : ?
  39. 39.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  40. 40.The ratio of boys to girls in a class is 9 : 5. There are 36 boys. How many girls are there?

Answer key

  1. 44000
  2. 117
  3. 3
  4. 84
  5. 51.8
  6. 24
  7. 42
  8. 14
  9. 62
  10. 28
  11. 40
  12. 14
  13. 221
  14. 33
  15. 39
  16. 146
  17. 79
  18. 24000
  19. 405
  20. 22
  21. 199
  22. 225
  23. 33
  24. 27
  25. 5
  26. 21
  27. 30
  28. 18
  29. 13/10
  30. 1
  31. 6
  32. 1.1
  33. 6
  34. 48
  35. 168
  36. 16
  37. 15/14
  38. 16
  39. 75
  40. 20

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