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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 857 · 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.A hostel has enough food for 10 students for 4 days. How many days will the same food last for 4 students?
  2. 2.10/12 + 1/2 =
  3. 3.The HCF of two numbers is 7 and their LCM is 84. One of the numbers is 28. What is the other number?
  4. 4.If 6 erasers cost ₹30, how much do 4 erasers cost (in ₹)?
  5. 5.28 + 5 × 7 − 4 =
  6. 6.Which is closest to 803 × 39? (Round each number first.) (a) 3200 (b) 32000 (c) 64000 (d) 320000
  7. 7.The ratio of boys to girls in a class is 5 : 4. There are 40 boys. How many girls are there?
  8. 8.Sneha takes 80 seconds and Aarav takes 50 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?
  9. 9.76 ÷ 8 =
  10. 10.Divide ₹290 between Isha and Nisha in the ratio 9 : 1. How much does Isha get (in ₹)?
  11. 11.Find the LCM of 30 and 12.
  12. 12.8 × (18 − 6) + 84 ÷ 7 =
  13. 13.The HCF of two numbers is 6 and their LCM is 216. One of the numbers is 54. What is the other number?
  14. 14.If 7 bottles of juice cost ₹371, how much do 10 bottles of juice cost (in ₹)?
  15. 15.The HCF of two numbers is 9 and their LCM is 270. One of the numbers is 45. What is the other number?
  16. 16.(17 + 3) × 9 − 25 =
  17. 17.Which of these numbers divides exactly by 8? (a) 1188 (b) 6032 (c) 3412 (d) 8171
  18. 18.Write 1/2 as a percent.
  19. 19.Find the LCM of 10, 11 and 5.
  20. 20.What percent of 25 is 20?
  21. 21.12.8 ÷ 4 =
  22. 22.What is 5/9 of 198 kg?
  23. 23.Which of these numbers divides exactly by 6? (a) 3777 (b) 5138 (c) 9480 (d) 4259
  24. 24.2.6 × 6 =
  25. 25.The HCF of two numbers is 8 and their LCM is 144. One of the numbers is 16. What is the other number?
  26. 26.12% of a number is 72. What is the number?
  27. 27.Round 11.33 to one decimal place. =
  28. 28.What percent of 400 is 76?
  29. 29.Two tanks hold 20 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.Which is closest to 3494 ÷ 49? (a) 140 (b) 35 (c) 700 (d) 70
  31. 31.The ratio of boys to girls in a class is 5 : 2. There are 45 boys. How many girls are there?
  32. 32.Find the HCF of 50 and 20.
  33. 33.Which is closest to 198 + 398 + 297? (a) 1100 (b) 900 (c) 1000 (d) 800
  34. 34.Write 3/10 as a percent.
  35. 35.What is the smallest number you must add to 713 so that it divides exactly by 11?
  36. 36.39 − 15 ÷ 5 × 3 =
  37. 37.What is 120% of 40?
  38. 38.8 × (26 − 17) + 81 ÷ 9 =
  39. 39.20 ÷ 5 × 4 + 12 =
  40. 40.Which is closest to 199 × 89? (Round each number first.) (a) 36000 (b) 1800 (c) 18000 (d) 180000

Answer key

  1. 10
  2. 4/3
  3. 21
  4. 20
  5. 59
  6. 32000
  7. 32
  8. 400
  9. 9.5
  10. 261
  11. 60
  12. 108
  13. 24
  14. 530
  15. 54
  16. 155
  17. 6032
  18. 50
  19. 110
  20. 80
  21. 3.2
  22. 110
  23. 9480
  24. 15.6
  25. 72
  26. 600
  27. 11.3
  28. 19
  29. 10
  30. 70
  31. 18
  32. 10
  33. 900
  34. 30
  35. 2
  36. 30
  37. 48
  38. 81
  39. 28
  40. 18000

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