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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 607 · 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.Divide ₹640 between Zoya and Ananya in the ratio 7 : 9. How much does Zoya get (in ₹)?
  2. 2.The HCF of two numbers is 5 and their LCM is 140. One of the numbers is 35. What is the other number?
  3. 3.Which is closest to 304 × 40? (Round each number first.) (a) 12000 (b) 1200 (c) 24000 (d) 120000
  4. 4.The HCF of two numbers is 7 and their LCM is 294. One of the numbers is 42. What is the other number?
  5. 5.What is 1/3 of 78 km?
  6. 6.The ratio of boys to girls in a class is 8 : 7. There are 24 boys. How many girls are there?
  7. 7.The HCF of two numbers is 9 and their LCM is 648. One of the numbers is 81. What is the other number?
  8. 8.7 painters can paint a school in 5 days. How many days would 5 painters take, working at the same speed?
  9. 9.(4 + 7) × 3 − 5 =
  10. 10.How many factors does 23 have?
  11. 11.3 × (15 − 12) + 24 ÷ 6 =
  12. 12.(6 + 9) × 3 − 5 =
  13. 13.A car goes 44 km on 4 litres of petrol. How far can it go on 15 litres (in km)?
  14. 14.If 2 kg of rice costs ₹102, how many kg can you buy for ₹408?
  15. 15.What is the smallest number you must take away from 197 so that it divides exactly by 13?
  16. 16.Which is closest to 201 × 51? (Round each number first.) (a) 20000 (b) 100000 (c) 10000 (d) 1000
  17. 17.8.4 ÷ 2 =
  18. 18.What percent of 25 is 22?
  19. 19.A hostel has enough food for 10 students for 10 days. How many days will the same food last for 2 students?
  20. 20.7 : 3 = 63 : ?
  21. 21.What percent of 500 is 310?
  22. 22.The ratio of boys to girls in a class is 7 : 8. There are 21 boys. How many girls are there?
  23. 23.4 : 7 = 36 : ?
  24. 24.2 : 14 = 16 : ?
  25. 25.What is the smallest number you must take away from 213 so that it divides exactly by 13?
  26. 26.What is the smallest number you must add to 640 so that it divides exactly by 7?
  27. 27.5/7 × 3/4 =
  28. 28.Divide ₹56 between Priya and Zoya in the ratio 3 : 1. How much does Priya get (in ₹)?
  29. 29.3 × (13 − 5) + 42 ÷ 7 =
  30. 30.12% of a number is 39. What is the number?
  31. 31.2/4 − 4/12 =
  32. 32.Pooja takes 60 seconds and Diya 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?
  33. 33.Find the LCM of 15 and 9.
  34. 34.8.72 + 2.2 =
  35. 35.14 ÷ 7 × 2 + 25 =
  36. 36.Find the LCM of 7, 4 and 6.
  37. 37.5.4 × 8 =
  38. 38.20% of a number is 106. What is the number?
  39. 39.How many factors does 46 have?
  40. 40.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 8 or 4.

Answer key

  1. 280
  2. 20
  3. 12000
  4. 49
  5. 26
  6. 21
  7. 72
  8. 7
  9. 28
  10. 2
  11. 13
  12. 40
  13. 165
  14. 8
  15. 2
  16. 10000
  17. 4.2
  18. 88
  19. 50
  20. 27
  21. 62
  22. 24
  23. 63
  24. 112
  25. 5
  26. 4
  27. 15/28
  28. 42
  29. 30
  30. 325
  31. 1/6
  32. 360
  33. 45
  34. 10.92
  35. 29
  36. 84
  37. 43.2
  38. 530
  39. 4
  40. 26

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