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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 902 · 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.Which is closest to 599 × 29? (Round each number first.) (a) 180000 (b) 1800 (c) 18000 (d) 36000
  2. 2.Nisha takes 45 seconds and Saanvi takes 72 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?
  3. 3.What is the smallest number you must take away from 506 so that it divides exactly by 7?
  4. 4.31 + 6 × 2 − 29 =
  5. 5.Write 3/20 as a percent.
  6. 6.7/11 + 7/10 =
  7. 7.If 10 bottles of juice cost ₹390, how much do 7 bottles of juice cost (in ₹)?
  8. 8.Find the HCF of 16 and 40.
  9. 9.A car goes 40 km on 5 litres of petrol. How far can it go on 24 litres (in km)?
  10. 10.What is 75% of 80?
  11. 11.Divide ₹72 between Ishaan and Aarav in the ratio 5 : 4. How much does Ishaan get (in ₹)?
  12. 12.Three temple bells ring every 9, 12 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.Which is closest to 96 + 697 + 701? (a) 1400 (b) 1600 (c) 1500 (d) 1700
  14. 14.6 painters can paint a school in 23 days. How many days would 3 painters take, working at the same speed?
  15. 15.Find the HCF of 65 and 39.
  16. 16.Which is closest to 803 × 79? (Round each number first.) (a) 6400 (b) 64000 (c) 128000 (d) 640000
  17. 17.Diya takes 30 seconds and Nisha takes 48 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?
  18. 18.Which is closest to 504 + 900 + 196? (a) 1500 (b) 1800 (c) 1600 (d) 1700
  19. 19.7/8 + 8/12 =
  20. 20.Find the LCM of 2, 9 and 6.
  21. 21.What percent of 50 is 13?
  22. 22.Ishaan scored 29 marks out of 50 in a test. What percentage did Ishaan score?
  23. 23.Manav takes 50 seconds and Isha takes 75 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.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  25. 25.9 : 2 = 72 : ?
  26. 26.A hall floor is 400 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.9 painters can paint a school in 28 days. How many days would 7 painters take, working at the same speed?
  28. 28.31.8 ÷ 6 =
  29. 29.Three temple bells ring every 24, 30 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  30. 30.What percent of 50 is 20?
  31. 31.80 ÷ 8 × 3 + 29 =
  32. 32.2.1 × 6 =
  33. 33.Write 22/25 as a percent.
  34. 34.The ratio of boys to girls in a class is 4 : 9. There are 28 boys. How many girls are there?
  35. 35.If 5 pens cost ₹140, how much do 8 pens cost (in ₹)?
  36. 36.Find the LCM of 2, 7 and 3.
  37. 37.What is the smallest number you must add to 170 so that it divides exactly by 3?
  38. 38.What is 4/7 of 91 kg?
  39. 39.1/2 + 3/4 =
  40. 40.If 7 kg of rice costs ₹413, how many kg can you buy for ₹354?

Answer key

  1. 18000
  2. 360
  3. 2
  4. 14
  5. 15
  6. 147/110
  7. 273
  8. 8
  9. 192
  10. 60
  11. 40
  12. 36
  13. 1500
  14. 46
  15. 13
  16. 64000
  17. 240
  18. 1600
  19. 37/24
  20. 18
  21. 26
  22. 58
  23. 150
  24. 75
  25. 16
  26. 24
  27. 36
  28. 5.3
  29. 120
  30. 40
  31. 59
  32. 12.6
  33. 88
  34. 63
  35. 224
  36. 42
  37. 1
  38. 52
  39. 5/4
  40. 6

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