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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 828 · 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 2, 4 and 8.
  2. 2.Three temple bells ring every 10, 6 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  3. 3.Find the HCF of 112 and 126.
  4. 4.Two tanks hold 30 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.Which of these numbers divides exactly by 8? (a) 3333 (b) 4550 (c) 2170 (d) 5376
  6. 6.How many factors does 35 have?
  7. 7.What is the smallest number you must take away from 839 so that it divides exactly by 3?
  8. 8.What is 1/3 of ₹33?
  9. 9.Round 66124 to the nearest thousand.
  10. 10.Dev takes 45 seconds and Ananya takes 48 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?
  11. 11.If 6 kg of rice costs ₹300, how many kg can you buy for ₹250?
  12. 12.43 + 6 × 5 − 39 =
  13. 13.1/2 of 10 + 6 × 4 =
  14. 14.2/9 × 2/5 =
  15. 15.1/5 × 1/7 =
  16. 16.Find the LCM of 15 and 25.
  17. 17.Which is closest to 505 + 605 + 803? (a) 2000 (b) 1900 (c) 2100 (d) 1800
  18. 18.2/11 + 2/4 =
  19. 19.What is the smallest number you must add to 181 so that it divides exactly by 8?
  20. 20.A hall floor is 100 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  21. 21.What percent of 400 is 112?
  22. 22.Round 27176 to the nearest ten.
  23. 23.Which is closest to 403 + 305 + 505? (a) 1100 (b) 1400 (c) 1200 (d) 1300
  24. 24.34 + 9 × 4 − 1 =
  25. 25.3.01 + 6.7 =
  26. 26.Which is closest to 402 + 402 + 699? (a) 1700 (b) 1600 (c) 1400 (d) 1500
  27. 27.4.9 × 2 =
  28. 28.Which of these numbers divides exactly by 6? (a) 2258 (b) 8718 (c) 9939 (d) 7381
  29. 29.What is the smallest number you must take away from 284 so that it divides exactly by 3?
  30. 30.What is the smallest number you must take away from 123 so that it divides exactly by 11?
  31. 31.Zoya scored 1 marks out of 50 in a test. What percentage did Zoya score?
  32. 32.If 5 mangoes cost ₹135, how much do 7 mangoes cost (in ₹)?
  33. 33.57 − 21 ÷ 7 × 6 =
  34. 34.Divide ₹169 between Karan and Manav in the ratio 8 : 5. How much does Manav get (in ₹)?
  35. 35.Zoya scored 24 marks out of 25 in a test. What percentage did Zoya score?
  36. 36.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 15, 4 or 9.
  37. 37.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 8. What is the other number?
  38. 38.8/9 of 63 + 3 × 7 =
  39. 39.A hall floor is 240 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.If 4 kg of rice costs ₹240, how many kg can you buy for ₹900?

Answer key

  1. 8
  2. 60
  3. 14
  4. 10
  5. 5376
  6. 4
  7. 2
  8. 11
  9. 66000
  10. 720
  11. 5
  12. 34
  13. 29
  14. 4/45
  15. 1/35
  16. 75
  17. 1900
  18. 15/22
  19. 3
  20. 15
  21. 28
  22. 27180
  23. 1200
  24. 69
  25. 9.71
  26. 1500
  27. 9.8
  28. 8718
  29. 2
  30. 2
  31. 2
  32. 189
  33. 39
  34. 65
  35. 96
  36. 183
  37. 18
  38. 77
  39. 12
  40. 15

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