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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 111 · 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.Which is closest to 1801 ÷ 19? (a) 180 (b) 90 (c) 900 (d) 45
  2. 2.A car goes 120 km on 6 litres of petrol. How far can it go on 18 litres (in km)?
  3. 3.Which of these numbers divides exactly by 9? (a) 5148 (b) 3775 (c) 1571 (d) 9947
  4. 4.4 : 2 = 32 : ?
  5. 5.A car goes 184 km on 8 litres of petrol. How far can it go on 40 litres (in km)?
  6. 6.What percent of 25 is 7?
  7. 7.A car goes 20 km on 2 litres of petrol. How far can it go on 12 litres (in km)?
  8. 8.14.8 ÷ 2 =
  9. 9.Round 75.54 to one decimal place. =
  10. 10.Two tanks hold 40 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.8 ÷ 2 × 3 + 11 =
  12. 12.If 12 erasers cost ₹576, how much do 11 erasers cost (in ₹)?
  13. 13.54 ÷ 6 × 5 + 19 =
  14. 14.Three temple bells ring every 24, 8 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.How many factors does 98 have?
  16. 16.A car goes 216 km on 9 litres of petrol. How far can it go on 19 litres (in km)?
  17. 17.2/3 − 1/2 =
  18. 18.What percent of 250 is 50?
  19. 19.Round 72292 to the nearest hundred.
  20. 20.Round 53082 to the nearest hundred.
  21. 21.If 2 cricket balls cost ₹40, how much do 20 cricket balls cost (in ₹)?
  22. 22.Find the smallest number bigger than 10 that leaves a remainder of 3 when divided by 4, 9 or 10.
  23. 23.Which is closest to 900 + 900 + 299? (a) 2000 (b) 2200 (c) 2300 (d) 2100
  24. 24.Find the LCM of 24 and 27.
  25. 25.Round 15.28 to one decimal place. =
  26. 26.(16 + 6) × 9 − 8 =
  27. 27.The ratio of boys to girls in a class is 2 : 5. There are 20 boys. How many girls are there?
  28. 28.Three temple bells ring every 5, 15 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  29. 29.How many factors does 75 have?
  30. 30.Find the HCF of 28 and 20.
  31. 31.The ratio of boys to girls in a class is 6 : 5. There are 54 boys. How many girls are there?
  32. 32.Round 83.58 to one decimal place. =
  33. 33.A hall floor is 400 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  34. 34.Which is closest to 2092 ÷ 29? (a) 700 (b) 140 (c) 70 (d) 35
  35. 35.2/9 + 2/6 =
  36. 36.The HCF of two numbers is 6 and their LCM is 36. One of the numbers is 18. What is the other number?
  37. 37.Find the LCM of 3 and 2.
  38. 38.12 : 14 = 48 : ?
  39. 39.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  40. 40.The HCF of two numbers is 5 and their LCM is 210. One of the numbers is 30. What is the other number?

Answer key

  1. 90
  2. 360
  3. 5148
  4. 16
  5. 920
  6. 28
  7. 120
  8. 7.4
  9. 75.5
  10. 10
  11. 23
  12. 528
  13. 64
  14. 120
  15. 6
  16. 456
  17. 1/6
  18. 20
  19. 72300
  20. 53100
  21. 400
  22. 183
  23. 2100
  24. 216
  25. 15.3
  26. 190
  27. 50
  28. 90
  29. 6
  30. 4
  31. 45
  32. 83.6
  33. 40
  34. 70
  35. 5/9
  36. 12
  37. 6
  38. 56
  39. 8
  40. 35

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