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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 604 · 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.(17 + 10) × 8 − 6 =
  2. 2.25% of a number is 86. What is the number?
  3. 3.Divide ₹390 between Diya and Sneha in the ratio 3 : 7. How much does Diya get (in ₹)?
  4. 4.Find the LCM of 40 and 15.
  5. 5.Farhan takes 75 seconds and Meera takes 50 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?
  6. 6.Which is closest to 402 × 20? (Round each number first.) (a) 16000 (b) 8000 (c) 800 (d) 80000
  7. 7.Three temple bells ring every 5, 20 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.A hall floor is 420 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  9. 9.Kavya takes 30 seconds and Rahul 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?
  10. 10.If 12 mangoes cost ₹636, how much do 13 mangoes cost (in ₹)?
  11. 11.If 4 bottles of juice cost ₹164, how much do 8 bottles of juice cost (in ₹)?
  12. 12.5 : 14 = 30 : ?
  13. 13.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 10, 4 or 9.
  14. 14.Which is closest to 2708 ÷ 31? (a) 45 (b) 900 (c) 90 (d) 180
  15. 15.The ratio of boys to girls in a class is 3 : 1. There are 24 boys. How many girls are there?
  16. 16.If 12 notebooks cost ₹324, how much do 6 notebooks cost (in ₹)?
  17. 17.7/10 + 4/8 =
  18. 18.Round 93073 to the nearest ten.
  19. 19.What is 1/2 of 22 kg?
  20. 20.Which of these numbers divides exactly by 3? (a) 2174 (b) 4619 (c) 3303 (d) 9089
  21. 21.4/5 × 7/10 =
  22. 22.Three temple bells ring every 6, 15 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.Round 49479 to the nearest hundred.
  24. 24.Find the HCF of 36 and 96.
  25. 25.Which of these numbers divides exactly by 4? (a) 9006 (b) 6310 (c) 5956 (d) 9015
  26. 26.A hall floor is 120 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.What is 1/2 of 48 kg?
  28. 28.Divide ₹45 between Rohan and Aarav in the ratio 8 : 1. How much does Rohan get (in ₹)?
  29. 29.What is the smallest number you must take away from 939 so that it divides exactly by 13?
  30. 30.51 − 8 ÷ 2 × 7 =
  31. 31.Find the HCF of 30 and 70.
  32. 32.If 4 kg of rice costs ₹284, how many kg can you buy for ₹710?
  33. 33.If 7 kg of rice costs ₹420, how many kg can you buy for ₹720?
  34. 34.Round 49797 to the nearest hundred.
  35. 35.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 3, 9 or 4.
  36. 36.What percent of 40 is 32?
  37. 37.4 painters can paint a school in 29 days. How many days would 2 painters take, working at the same speed?
  38. 38.5 : 11 = 15 : ?
  39. 39.5.8 × 2 =
  40. 40.A hall floor is 350 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 210
  2. 344
  3. 117
  4. 120
  5. 150
  6. 8000
  7. 60
  8. 21
  9. 90
  10. 689
  11. 328
  12. 84
  13. 182
  14. 90
  15. 8
  16. 162
  17. 6/5
  18. 93070
  19. 11
  20. 3303
  21. 14/25
  22. 120
  23. 49500
  24. 12
  25. 5956
  26. 30
  27. 24
  28. 40
  29. 3
  30. 23
  31. 10
  32. 10
  33. 12
  34. 49800
  35. 37
  36. 80
  37. 58
  38. 33
  39. 11.6
  40. 14

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