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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 774 · 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 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.3 : 5 = 9 : ?
  3. 3.What percent of 20 is 16?
  4. 4.9/10 − 1/8 =
  5. 5.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 5 or 6.
  6. 6.Three temple bells ring every 6, 12 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.Find the HCF of 80 and 30.
  8. 8.If 10 pens cost ₹60, how much do 13 pens cost (in ₹)?
  9. 9.Which is closest to 2101 ÷ 31? (a) 35 (b) 700 (c) 140 (d) 70
  10. 10.Which is closest to 3498 ÷ 51? (a) 140 (b) 35 (c) 70 (d) 700
  11. 11.7 : 14 = 35 : ?
  12. 12.4.28 + 4.8 =
  13. 13.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?
  14. 14.Aditya takes 80 seconds and Kabir 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?
  15. 15.Round 45.93 to one decimal place. =
  16. 16.What is the smallest number you must add to 890 so that it divides exactly by 13?
  17. 17.Find the LCM of 18 and 10.
  18. 18.15 − 15 ÷ 5 × 4 =
  19. 19.What is 120% of 10?
  20. 20.A car goes 70 km on 7 litres of petrol. How far can it go on 35 litres (in km)?
  21. 21.Find the LCM of 30 and 25.
  22. 22.Which is closest to 597 + 297 + 303? (a) 1200 (b) 1300 (c) 1100 (d) 1400
  23. 23.A car goes 240 km on 12 litres of petrol. How far can it go on 11 litres (in km)?
  24. 24.60% of a number is 132. What is the number?
  25. 25.30 ÷ 3 × 7 + 22 =
  26. 26.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 8, 12 or 3.
  27. 27.Three temple bells ring every 12, 9 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.Which is closest to 598 × 51? (Round each number first.) (a) 60000 (b) 30000 (c) 300000 (d) 3000
  29. 29.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 3, 5 or 10.
  30. 30.What is the smallest number you must add to 535 so that it divides exactly by 6?
  31. 31.Round 94834 to the nearest thousand.
  32. 32.6/11 × 1/5 =
  33. 33.The ratio of boys to girls in a class is 4 : 7. There are 36 boys. How many girls are there?
  34. 34.47 + 3 × 2 − 41 =
  35. 35.17 + 5 × 10 − 17 =
  36. 36.6/10 × 1/8 =
  37. 37.2/5 of 55 + 8 × 2 =
  38. 38.How many factors does 88 have?
  39. 39.2.86 + 2.3 =
  40. 40.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 10, 3 or 12.

Answer key

  1. 20
  2. 15
  3. 80
  4. 31/40
  5. 62
  6. 60
  7. 10
  8. 78
  9. 70
  10. 70
  11. 70
  12. 9.08
  13. 30
  14. 720
  15. 45.9
  16. 7
  17. 90
  18. 3
  19. 12
  20. 350
  21. 150
  22. 1200
  23. 220
  24. 220
  25. 92
  26. 25
  27. 36
  28. 30000
  29. 31
  30. 5
  31. 95000
  32. 6/55
  33. 63
  34. 12
  35. 50
  36. 3/40
  37. 38
  38. 8
  39. 5.16
  40. 61

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