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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 981 · 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.Saanvi scored 3 marks out of 20 in a test. What percentage did Saanvi score?
  2. 2.Write 7/10 as a percent.
  3. 3.Find the LCM of 11, 4 and 12.
  4. 4.What percent of 250 is 10?
  5. 5.What is the smallest number you must take away from 656 so that it divides exactly by 11?
  6. 6.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  7. 7.A hall floor is 135 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.Tara takes 72 seconds and Sneha takes 30 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.Which of these numbers divides exactly by 3? (a) 1113 (b) 1636 (c) 4832 (d) 7237
  10. 10.If 3 kg of rice costs ₹264, how many kg can you buy for ₹968?
  11. 11.38 + 3 × 6 − 3 =
  12. 12.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 12, 5 or 3.
  13. 13.4/6 × 4/10 =
  14. 14.4/6 − 1/2 =
  15. 15.The HCF of two numbers is 4 and their LCM is 144. One of the numbers is 16. What is the other number?
  16. 16.If 6 cricket balls cost ₹264, how much do 18 cricket balls cost (in ₹)?
  17. 17.Three temple bells ring every 24, 5 and 20 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.How many factors does 35 have?
  19. 19.Which of these numbers divides exactly by 8? (a) 6614 (b) 6997 (c) 8813 (d) 2600
  20. 20.2 painters can paint a school in 22 days. How many days would 11 painters take, working at the same speed?
  21. 21.3/8 × 1/4 =
  22. 22.4 painters can paint a school in 17 days. How many days would 2 painters take, working at the same speed?
  23. 23.Which of these numbers divides exactly by 8? (a) 2896 (b) 5834 (c) 2778 (d) 6333
  24. 24.Which is closest to 2391 ÷ 31? (a) 160 (b) 80 (c) 800 (d) 40
  25. 25.Find the LCM of 10, 6 and 3.
  26. 26.Which is closest to 399 × 50? (Round each number first.) (a) 2000 (b) 40000 (c) 200000 (d) 20000
  27. 27.If 7 kg of rice costs ₹539, how many kg can you buy for ₹308?
  28. 28.Find the LCM of 2, 14 and 13.
  29. 29.What is the smallest number you must add to 643 so that it divides exactly by 8?
  30. 30.2 × (18 − 3) + 63 ÷ 9 =
  31. 31.What is 8/9 of 45 kg?
  32. 32.The HCF of two numbers is 3 and their LCM is 45. One of the numbers is 15. What is the other number?
  33. 33.Saanvi scored 30 marks out of 40 in a test. What percentage did Saanvi score?
  34. 34.Find the LCM of 8 and 3.
  35. 35.The ratio of boys to girls in a class is 5 : 6. There are 15 boys. How many girls are there?
  36. 36.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 10, 3 or 12.
  37. 37.1/3 − 2/7 =
  38. 38.If 9 kg of rice costs ₹252, how many kg can you buy for ₹56?
  39. 39.Which is closest to 801 × 61? (Round each number first.) (a) 480000 (b) 96000 (c) 4800 (d) 48000
  40. 40.Find the HCF of 63 and 18.

Answer key

  1. 15
  2. 70
  3. 132
  4. 4
  5. 7
  6. 112
  7. 6
  8. 360
  9. 1113
  10. 11
  11. 53
  12. 61
  13. 4/15
  14. 1/6
  15. 36
  16. 792
  17. 120
  18. 4
  19. 2600
  20. 4
  21. 3/32
  22. 34
  23. 2896
  24. 80
  25. 30
  26. 20000
  27. 4
  28. 182
  29. 5
  30. 37
  31. 40
  32. 9
  33. 75
  34. 24
  35. 18
  36. 61
  37. 1/21
  38. 2
  39. 48000
  40. 9

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