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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 360 · 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.The HCF of two numbers is 7 and their LCM is 252. One of the numbers is 63. What is the other number?
  2. 2.Find the HCF of 63 and 35.
  3. 3.Nisha scored 2 marks out of 40 in a test. What percentage did Nisha score?
  4. 4.What is the smallest number you must add to 105 so that it divides exactly by 4?
  5. 5.9/12 × 6/8 =
  6. 6.Which is closest to 896 × 19? (Round each number first.) (a) 1800 (b) 36000 (c) 180000 (d) 18000
  7. 7.Which is closest to 3994 ÷ 51? (a) 40 (b) 80 (c) 160 (d) 800
  8. 8.Find the HCF of 36 and 20.
  9. 9.What is the smallest number you must take away from 971 so that it divides exactly by 8?
  10. 10.If 10 notebooks cost ₹260, how much do 7 notebooks cost (in ₹)?
  11. 11.1/7 of 70 + 5 × 3 =
  12. 12.5/8 − 1/4 =
  13. 13.What percent of 400 is 284?
  14. 14.Divide ₹135 between Arjun and Aarav in the ratio 3 : 2. How much does Arjun get (in ₹)?
  15. 15.Find the smallest number bigger than 15 that leaves a remainder of 5 when divided by 15, 10 or 6.
  16. 16.Find the HCF of 15 and 21.
  17. 17.If 7 mangoes cost ₹133, how much do 15 mangoes cost (in ₹)?
  18. 18.3 × (12 − 2) + 36 ÷ 3 =
  19. 19.Find the HCF of 24 and 18.
  20. 20.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 9, 6 or 5.
  21. 21.Find the HCF of 28 and 20.
  22. 22.26 + 5 × 4 − 10 =
  23. 23.Round 20.41 to one decimal place. =
  24. 24.The ratio of boys to girls in a class is 4 : 3. There are 40 boys. How many girls are there?
  25. 25.Round 24639 to the nearest thousand.
  26. 26.11 + 2 × 11 − 7 =
  27. 27.A car goes 168 km on 12 litres of petrol. How far can it go on 3 litres (in km)?
  28. 28.The ratio of boys to girls in a class is 5 : 2. There are 35 boys. How many girls are there?
  29. 29.4/9 − 4/10 =
  30. 30.The ratio of boys to girls in a class is 5 : 1. There are 30 boys. How many girls are there?
  31. 31.Round 71.43 to one decimal place. =
  32. 32.Write 11/20 as a percent.
  33. 33.Which is closest to 397 + 297 + 296? (a) 900 (b) 1000 (c) 1100 (d) 1200
  34. 34.What is the smallest number you must add to 171 so that it divides exactly by 4?
  35. 35.Three temple bells ring every 12, 15 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.Three temple bells ring every 30, 6 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  37. 37.Find the LCM of 3, 4 and 6.
  38. 38.What is the smallest number you must add to 697 so that it divides exactly by 12?
  39. 39.A hall floor is 240 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.Which is closest to 997 ÷ 51? (a) 20 (b) 200 (c) 40 (d) 10

Answer key

  1. 28
  2. 7
  3. 5
  4. 3
  5. 9/16
  6. 18000
  7. 80
  8. 4
  9. 3
  10. 182
  11. 25
  12. 3/8
  13. 71
  14. 81
  15. 35
  16. 3
  17. 285
  18. 42
  19. 6
  20. 91
  21. 4
  22. 36
  23. 20.4
  24. 30
  25. 25000
  26. 26
  27. 42
  28. 14
  29. 2/45
  30. 6
  31. 71.4
  32. 55
  33. 1000
  34. 1
  35. 60
  36. 120
  37. 12
  38. 11
  39. 24
  40. 20

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