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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 106 · 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.Find the LCM of 32 and 20.
  2. 2.Find the HCF of 36 and 27.
  3. 3.Find the LCM of 8, 4 and 15.
  4. 4.1/2 − 3/9 =
  5. 5.A car goes 22 km on 2 litres of petrol. How far can it go on 24 litres (in km)?
  6. 6.The HCF of two numbers is 2 and their LCM is 24. One of the numbers is 6. What is the other number?
  7. 7.Which is closest to 399 × 19? (Round each number first.) (a) 16000 (b) 80000 (c) 800 (d) 8000
  8. 8.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 4 or 12.
  9. 9.The ratio of boys to girls in a class is 7 : 9. There are 70 boys. How many girls are there?
  10. 10.Which is closest to 499 × 32? (Round each number first.) (a) 15000 (b) 1500 (c) 30000 (d) 150000
  11. 11.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 10, 3 or 6.
  12. 12.Find the LCM of 40 and 25.
  13. 13.5/7 × 3/10 =
  14. 14.Write 1/2 as a percent.
  15. 15.1/2 × 2/7 =
  16. 16.Divide ₹66 between Meera and Zoya in the ratio 2 : 9. How much does Zoya get (in ₹)?
  17. 17.Which of these numbers divides exactly by 4? (a) 3113 (b) 1995 (c) 6028 (d) 1373
  18. 18.If 7 pens cost ₹189, how much do 6 pens cost (in ₹)?
  19. 19.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  20. 20.How many factors does 29 have?
  21. 21.If 7 kg of rice costs ₹574, how many kg can you buy for ₹984?
  22. 22.11 : 4 = 99 : ?
  23. 23.7.57 + 6.8 =
  24. 24.How many factors does 35 have?
  25. 25.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  26. 26.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 9, 5 or 15.
  27. 27.How many factors does 50 have?
  28. 28.Find the LCM of 6 and 27.
  29. 29.The ratio of boys to girls in a class is 1 : 2. There are 9 boys. How many girls are there?
  30. 30.A car goes 176 km on 11 litres of petrol. How far can it go on 25 litres (in km)?
  31. 31.Saanvi takes 75 seconds and Pooja 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?
  32. 32.26.5 ÷ 5 =
  33. 33.1/2 of 16 + 7 × 4 =
  34. 34.What is 15% of 60?
  35. 35.8/12 + 7/11 =
  36. 36.54 − 42 ÷ 7 × 5 =
  37. 37.What is the smallest number you must take away from 363 so that it divides exactly by 4?
  38. 38.Find the HCF of 24 and 27.
  39. 39.How many factors does 38 have?
  40. 40.19 + 6 × 3 − 12 =

Answer key

  1. 160
  2. 9
  3. 120
  4. 1/6
  5. 264
  6. 8
  7. 8000
  8. 62
  9. 90
  10. 15000
  11. 31
  12. 200
  13. 3/14
  14. 50
  15. 1/7
  16. 54
  17. 6028
  18. 162
  19. 125
  20. 2
  21. 12
  22. 36
  23. 14.37
  24. 4
  25. 12
  26. 47
  27. 6
  28. 54
  29. 18
  30. 400
  31. 300
  32. 5.3
  33. 36
  34. 9
  35. 43/33
  36. 24
  37. 3
  38. 3
  39. 4
  40. 25

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