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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 303 · 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.Two tanks hold 120 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 8, 5 or 12.
  3. 3.What is the smallest number you must take away from 455 so that it divides exactly by 12?
  4. 4.Write 3/20 as a percent.
  5. 5.If 3 kg of rice costs ₹225, how many kg can you buy for ₹1050?
  6. 6.What is 15% of 560?
  7. 7.5.9 × 4 =
  8. 8.2/6 − 2/10 =
  9. 9.7 × (16 − 7) + 16 ÷ 4 =
  10. 10.Which of these numbers divides exactly by 6? (a) 7492 (b) 2844 (c) 2216 (d) 8002
  11. 11.Which is closest to 900 × 29? (Round each number first.) (a) 54000 (b) 27000 (c) 2700 (d) 270000
  12. 12.2/3 of 18 + 8 × 7 =
  13. 13.What is the smallest number you must add to 296 so that it divides exactly by 3?
  14. 14.If 8 kg of rice costs ₹592, how many kg can you buy for ₹222?
  15. 15.64 ÷ 8 × 2 + 23 =
  16. 16.Two tanks hold 100 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.The ratio of boys to girls in a class is 7 : 2. There are 63 boys. How many girls are there?
  18. 18.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  19. 19.Divide ₹294 between Saanvi and Tara in the ratio 4 : 3. How much does Tara get (in ₹)?
  20. 20.Three temple bells ring every 30, 24 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  21. 21.Kabir takes 75 seconds and Arjun takes 60 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?
  22. 22.3 : 2 = 6 : ?
  23. 23.Write 1/2 as a percent.
  24. 24.2 painters can paint a school in 13 days. How many days would 13 painters take, working at the same speed?
  25. 25.Rahul scored 21 marks out of 25 in a test. What percentage did Rahul score?
  26. 26.5 × (30 − 5) + 4 ÷ 2 =
  27. 27.What percent of 80 is 60?
  28. 28.How many factors does 53 have?
  29. 29.Dev takes 60 seconds and Meera takes 54 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?
  30. 30.28 − 4 ÷ 2 × 5 =
  31. 31.Which of these numbers divides exactly by 11? (a) 8470 (b) 1140 (c) 1349 (d) 9837
  32. 32.The ratio of boys to girls in a class is 3 : 4. There are 24 boys. How many girls are there?
  33. 33.What is 7/9 of 54 kg?
  34. 34.If 6 pencil boxes cost ₹102, how much do 5 pencil boxes cost (in ₹)?
  35. 35.A car goes 126 km on 9 litres of petrol. How far can it go on 15 litres (in km)?
  36. 36.Round 38.39 to one decimal place. =
  37. 37.4 ÷ 2 × 3 + 9 =
  38. 38.Find the HCF of 45 and 30.
  39. 39.If 6 kg of rice costs ₹198, how many kg can you buy for ₹363?
  40. 40.Find the smallest number bigger than 8 that leaves a remainder of 1 when divided by 4, 6 or 8.

Answer key

  1. 30
  2. 123
  3. 11
  4. 15
  5. 14
  6. 84
  7. 23.6
  8. 2/15
  9. 67
  10. 2844
  11. 27000
  12. 68
  13. 1
  14. 3
  15. 39
  16. 20
  17. 18
  18. 16
  19. 126
  20. 120
  21. 300
  22. 4
  23. 50
  24. 2
  25. 84
  26. 127
  27. 75
  28. 2
  29. 540
  30. 18
  31. 8470
  32. 32
  33. 42
  34. 85
  35. 210
  36. 38.4
  37. 15
  38. 15
  39. 11
  40. 25

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