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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 820 · 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.What percent of 25 is 20?
  2. 2.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  3. 3.Round 68349 to the nearest ten.
  4. 4.24 + 6 × 12 − 14 =
  5. 5.3.34 + 5.4 =
  6. 6.What percent of 20 is 2?
  7. 7.60% of a number is 117. What is the number?
  8. 8.(14 + 2) × 6 − 1 =
  9. 9.A hall floor is 240 cm long and 210 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.If 2 kg of rice costs ₹110, how many kg can you buy for ₹715?
  11. 11.The ratio of boys to girls in a class is 9 : 5. There are 81 boys. How many girls are there?
  12. 12.Find the LCM of 5, 6 and 10.
  13. 13.What percent of 200 is 164?
  14. 14.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  15. 15.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 4, 3 or 15.
  16. 16.Divide ₹265 between Arjun and Saanvi in the ratio 1 : 4. How much does Saanvi get (in ₹)?
  17. 17.Which of these numbers divides exactly by 9? (a) 7435 (b) 3132 (c) 6445 (d) 9067
  18. 18.Which is closest to 1399 ÷ 21? (a) 35 (b) 700 (c) 70 (d) 140
  19. 19.2 × (24 − 10) + 60 ÷ 5 =
  20. 20.What is 5/8 of 48 km?
  21. 21.The ratio of boys to girls in a class is 2 : 9. There are 10 boys. How many girls are there?
  22. 22.Tara takes 50 seconds and Vivaan takes 80 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?
  23. 23.12 painters can paint a school in 17 days. How many days would 17 painters take, working at the same speed?
  24. 24.Divide ₹72 between Aarav and Ishaan in the ratio 5 : 3. How much does Ishaan get (in ₹)?
  25. 25.Which is closest to 797 × 29? (Round each number first.) (a) 48000 (b) 2400 (c) 24000 (d) 240000
  26. 26.What percent of 20 is 6?
  27. 27.The ratio of boys to girls in a class is 9 : 2. There are 72 boys. How many girls are there?
  28. 28.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 4, 15 or 3.
  29. 29.2 : 15 = 10 : ?
  30. 30.Divide ₹352 between Kavya and Tara in the ratio 6 : 5. How much does Kavya get (in ₹)?
  31. 31.11/12 + 1/7 =
  32. 32.If 7 kg of rice costs ₹413, how many kg can you buy for ₹708?
  33. 33.Which of these numbers divides exactly by 6? (a) 7250 (b) 5308 (c) 1488 (d) 1107
  34. 34.31 − 72 ÷ 9 × 3 =
  35. 35.Which is closest to 901 + 502 + 102? (a) 1700 (b) 1500 (c) 1400 (d) 1600
  36. 36.If 5 pencil boxes cost ₹180, how much do 9 pencil boxes cost (in ₹)?
  37. 37.Which is closest to 305 + 198 + 599? (a) 1000 (b) 1300 (c) 1200 (d) 1100
  38. 38.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  39. 39.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  40. 40.Find the LCM of 18 and 4.

Answer key

  1. 80
  2. 45
  3. 68350
  4. 82
  5. 8.74
  6. 10
  7. 195
  8. 95
  9. 56
  10. 13
  11. 45
  12. 30
  13. 82
  14. 150
  15. 62
  16. 212
  17. 3132
  18. 70
  19. 40
  20. 30
  21. 45
  22. 400
  23. 12
  24. 27
  25. 24000
  26. 30
  27. 16
  28. 62
  29. 75
  30. 192
  31. 89/84
  32. 12
  33. 1488
  34. 7
  35. 1500
  36. 324
  37. 1100
  38. 20
  39. 12
  40. 36

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