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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 871 · 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. 1.1/3 of 33 + 6 × 9 =
  2. 2.If 10 pencil boxes cost ₹480, how much do 13 pencil boxes cost (in ₹)?
  3. 3.Divide ₹156 between Meera and Arjun in the ratio 1 : 2. How much does Meera get (in ₹)?
  4. 4.30.5 ÷ 5 =
  5. 5.Three temple bells ring every 24, 8 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Find the LCM of 7, 14 and 8.
  7. 7.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 15, 8 or 6.
  8. 8.Find the LCM of 5, 7 and 6.
  9. 9.45 − 36 ÷ 4 × 4 =
  10. 10.Find the third proportional to 9 and 36 (that is, 9 : 36 = 36 : ?).
  11. 11.If 3 kg of rice costs ₹213, how many kg can you buy for ₹1065?
  12. 12.Find the HCF of 50 and 70.
  13. 13.24 − 12 ÷ 6 × 7 =
  14. 14.Find the LCM of 27 and 24.
  15. 15.Two tanks hold 70 litres and 40 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.Three temple bells ring every 6, 12 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  17. 17.What is the smallest number you must take away from 152 so that it divides exactly by 7?
  18. 18.65 − 16 ÷ 2 × 8 =
  19. 19.10% of a number is 20. What is the number?
  20. 20.2 painters can paint a school in 8 days. How many days would 4 painters take, working at the same speed?
  21. 21.If 4 kg of rice costs ₹268, how many kg can you buy for ₹134?
  22. 22.Which is closest to 497 × 49? (Round each number first.) (a) 2500 (b) 25000 (c) 50000 (d) 250000
  23. 23.Two tanks hold 225 litres and 360 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.If 5 notebooks cost ₹180, how much do 4 notebooks cost (in ₹)?
  25. 25.Two tanks hold 80 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  26. 26.A hall floor is 175 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  28. 28.Find the third proportional to 4 and 8 (that is, 4 : 8 = 8 : ?).
  29. 29.If 7 kg of rice costs ₹434, how many kg can you buy for ₹248?
  30. 30.Isha scored 44 marks out of 80 in a test. What percentage did Isha score?
  31. 31.Vivaan takes 36 seconds and Diya 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?
  32. 32.Which is closest to 204 × 31? (Round each number first.) (a) 12000 (b) 60000 (c) 600 (d) 6000
  33. 33.What is 10% of 300?
  34. 34.Divide ₹70 between Dev and Vivaan in the ratio 7 : 3. How much does Vivaan get (in ₹)?
  35. 35.If 10 kites cost ₹280, how much do 20 kites cost (in ₹)?
  36. 36.4.43 + 9.6 =
  37. 37.Find the LCM of 5, 2 and 15.
  38. 38.How many factors does 97 have?
  39. 39.What percent of 40 is 30?
  40. 40.9.75 + 1.6 =

Answer key

  1. 65
  2. 624
  3. 52
  4. 6.1
  5. 120
  6. 56
  7. 124
  8. 210
  9. 9
  10. 144
  11. 15
  12. 10
  13. 10
  14. 216
  15. 10
  16. 60
  17. 5
  18. 1
  19. 200
  20. 4
  21. 2
  22. 25000
  23. 45
  24. 144
  25. 40
  26. 42
  27. 75
  28. 16
  29. 4
  30. 55
  31. 180
  32. 6000
  33. 30
  34. 21
  35. 560
  36. 14.03
  37. 30
  38. 2
  39. 75
  40. 11.35

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