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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 431 · 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.What is 2/5 of 40 km?
  2. 2.5.13 + 7.4 =
  3. 3.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 15, 9 or 5.
  4. 4.Round 82084 to the nearest hundred.
  5. 5.Round 95073 to the nearest thousand.
  6. 6.What is 50% of 364?
  7. 7.2/12 + 2/6 =
  8. 8.Which is closest to 698 × 22? (Round each number first.) (a) 28000 (b) 140000 (c) 1400 (d) 14000
  9. 9.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 5, 12 or 9.
  10. 10.Aarav takes 40 seconds and Tara takes 50 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?
  11. 11.A hall floor is 125 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  12. 12.The ratio of boys to girls in a class is 7 : 9. There are 42 boys. How many girls are there?
  13. 13.9 painters can paint a school in 15 days. How many days would 3 painters take, working at the same speed?
  14. 14.Find the HCF of 16 and 40.
  15. 15.What is 1/2 of 52 students?
  16. 16.16 ÷ 2 × 5 + 5 =
  17. 17.4 × (26 − 9) + 20 ÷ 2 =
  18. 18.Find the LCM of 14, 9 and 3.
  19. 19.Find the HCF of 28 and 70.
  20. 20.A car goes 147 km on 7 litres of petrol. How far can it go on 3 litres (in km)?
  21. 21.Find the HCF of 20 and 16.
  22. 22.A hall floor is 180 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.What is the smallest number you must add to 622 so that it divides exactly by 11?
  24. 24.Find the HCF of 84 and 24.
  25. 25.Which of these numbers divides exactly by 3? (a) 2784 (b) 6739 (c) 1414 (d) 1105
  26. 26.How many factors does 24 have?
  27. 27.What is 120% of 565?
  28. 28.If 9 kg of rice costs ₹531, how many kg can you buy for ₹826?
  29. 29.Two tanks hold 60 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Find the HCF of 63 and 54.
  31. 31.If 2 cricket balls cost ₹74, how much do 20 cricket balls cost (in ₹)?
  32. 32.Round 15.67 to one decimal place. =
  33. 33.What is 1/9 of ₹27?
  34. 34.1/2 × 1/7 =
  35. 35.64 ÷ 8 × 3 + 5 =
  36. 36.How many factors does 51 have?
  37. 37.If 2 pencil boxes cost ₹68, how much do 10 pencil boxes cost (in ₹)?
  38. 38.28 + 8 × 6 − 14 =
  39. 39.Which of these numbers divides exactly by 3? (a) 7656 (b) 2734 (c) 8401 (d) 2654
  40. 40.Write 21/25 as a percent.

Answer key

  1. 16
  2. 12.53
  3. 49
  4. 82100
  5. 95000
  6. 182
  7. 1/2
  8. 14000
  9. 183
  10. 200
  11. 10
  12. 54
  13. 45
  14. 8
  15. 26
  16. 45
  17. 78
  18. 126
  19. 14
  20. 63
  21. 4
  22. 12
  23. 5
  24. 12
  25. 2784
  26. 8
  27. 678
  28. 14
  29. 15
  30. 9
  31. 740
  32. 15.7
  33. 3
  34. 1/14
  35. 29
  36. 4
  37. 340
  38. 62
  39. 7656
  40. 84

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