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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 18 · 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 28 and 20.
  2. 2.What percent of 50 is 20?
  3. 3.Which is closest to 604 ÷ 19? (a) 300 (b) 60 (c) 30 (d) 15
  4. 4.What is the smallest number you must add to 293 so that it divides exactly by 3?
  5. 5.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 4, 8 or 9.
  6. 6.3.6 × 9 =
  7. 7.(19 + 20) × 8 − 9 =
  8. 8.10% of a number is 48. What is the number?
  9. 9.63 ÷ 7 × 5 + 6 =
  10. 10.Divide ₹715 between Diya and Farhan in the ratio 4 : 9. How much does Diya get (in ₹)?
  11. 11.52.8 ÷ 6 =
  12. 12.Divide ₹595 between Meera and Kabir in the ratio 9 : 8. How much does Meera get (in ₹)?
  13. 13.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  14. 14.If 12 pencil boxes cost ₹432, how much do 2 pencil boxes cost (in ₹)?
  15. 15.Two tanks hold 80 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.27 ÷ 3 × 5 + 25 =
  17. 17.Two tanks hold 225 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.What is 5/7 of ₹63?
  19. 19.Which is closest to 698 + 201 + 402? (a) 1200 (b) 1500 (c) 1300 (d) 1400
  20. 20.24 ÷ 4 × 2 + 19 =
  21. 21.Find the LCM of 18 and 48.
  22. 22.A hall floor is 140 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  23. 23.3.7 × 3 =
  24. 24.Isha scored 56 marks out of 80 in a test. What percentage did Isha score?
  25. 25.5/9 + 1/7 =
  26. 26.If 10 cricket balls cost ₹450, how much do 19 cricket balls cost (in ₹)?
  27. 27.What is 1/4 of 76 litres?
  28. 28.What is the smallest number you must take away from 172 so that it divides exactly by 8?
  29. 29.The HCF of two numbers is 3 and their LCM is 135. One of the numbers is 15. What is the other number?
  30. 30.Round 99026 to the nearest ten.
  31. 31.Find the HCF of 6 and 15.
  32. 32.If 5 erasers cost ₹95, how much do 15 erasers cost (in ₹)?
  33. 33.4 painters can paint a school in 30 days. How many days would 5 painters take, working at the same speed?
  34. 34.What is the smallest number you must add to 136 so that it divides exactly by 11?
  35. 35.Find the LCM of 9, 3 and 6.
  36. 36.Find the HCF of 15 and 12.
  37. 37.The HCF of two numbers is 3 and their LCM is 120. One of the numbers is 15. What is the other number?
  38. 38.The HCF of two numbers is 5 and their LCM is 120. One of the numbers is 40. What is the other number?
  39. 39.How many factors does 17 have?
  40. 40.What is 1/2 of 10 km?

Answer key

  1. 140
  2. 40
  3. 30
  4. 1
  5. 73
  6. 32.4
  7. 303
  8. 480
  9. 51
  10. 220
  11. 8.8
  12. 315
  13. 18
  14. 72
  15. 40
  16. 70
  17. 25
  18. 45
  19. 1300
  20. 31
  21. 144
  22. 42
  23. 11.1
  24. 70
  25. 44/63
  26. 855
  27. 19
  28. 4
  29. 27
  30. 99030
  31. 3
  32. 285
  33. 24
  34. 7
  35. 18
  36. 3
  37. 24
  38. 15
  39. 2
  40. 5

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