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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 783 · 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 90 litres and 60 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 8 that leaves a remainder of 1 when divided by 8, 5 or 6.
  3. 3.Which is closest to 398 + 602 + 295? (a) 1500 (b) 1300 (c) 1400 (d) 1200
  4. 4.Round 86673 to the nearest thousand.
  5. 5.Divide ₹114 between Kavya and Meera in the ratio 5 : 1. How much does Meera get (in ₹)?
  6. 6.Which is closest to 601 × 70? (Round each number first.) (a) 420000 (b) 84000 (c) 4200 (d) 42000
  7. 7.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  8. 8.Round 4199 to the nearest hundred.
  9. 9.1.4 × 4 =
  10. 10.Find the HCF of 33 and 44.
  11. 11.1/12 × 1/3 =
  12. 12.The ratio of boys to girls in a class is 2 : 1. There are 4 boys. How many girls are there?
  13. 13.38 + 6 × 2 − 24 =
  14. 14.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 10, 15 or 6.
  15. 15.How many factors does 17 have?
  16. 16.Round 12.31 to one decimal place. =
  17. 17.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  18. 18.Find the HCF of 117 and 91.
  19. 19.Divide ₹154 between Karan and Tara in the ratio 3 : 8. How much does Karan get (in ₹)?
  20. 20.38 − 12 ÷ 3 × 2 =
  21. 21.Three temple bells ring every 9, 4 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.The ratio of boys to girls in a class is 3 : 7. There are 21 boys. How many girls are there?
  23. 23.Find the LCM of 42 and 54.
  24. 24.If 10 kites cost ₹360, how much do 2 kites cost (in ₹)?
  25. 25.(7 + 12) × 3 − 9 =
  26. 26.Rahul takes 72 seconds and Aarav 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?
  27. 27.(5 + 8) × 3 − 21 =
  28. 28.What is 8/9 of 72 litres?
  29. 29.If 7 kg of rice costs ₹567, how many kg can you buy for ₹486?
  30. 30.How many factors does 25 have?
  31. 31.Round 69.71 to one decimal place. =
  32. 32.36 ÷ 6 × 9 + 19 =
  33. 33.Diya takes 48 seconds and Sneha takes 36 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?
  34. 34.What is 1/10 of 210 kg?
  35. 35.10 + 12 × 2 − 3 =
  36. 36.5 painters can paint a school in 16 days. How many days would 4 painters take, working at the same speed?
  37. 37.The HCF of two numbers is 6 and their LCM is 72. One of the numbers is 18. What is the other number?
  38. 38.6 painters can paint a school in 19 days. How many days would 2 painters take, working at the same speed?
  39. 39.Aarav takes 72 seconds and Pooja takes 80 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?
  40. 40.Find the LCM of 7, 6 and 3.

Answer key

  1. 30
  2. 121
  3. 1300
  4. 87000
  5. 19
  6. 42000
  7. 20
  8. 4200
  9. 5.6
  10. 11
  11. 1/36
  12. 2
  13. 26
  14. 32
  15. 2
  16. 12.3
  17. 72
  18. 13
  19. 42
  20. 30
  21. 36
  22. 49
  23. 378
  24. 72
  25. 48
  26. 360
  27. 18
  28. 64
  29. 6
  30. 3
  31. 69.7
  32. 73
  33. 144
  34. 21
  35. 31
  36. 20
  37. 24
  38. 57
  39. 720
  40. 42

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