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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 854 · 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 is the smallest number you must take away from 803 so that it divides exactly by 13?
  2. 2.What is the smallest number you must take away from 231 so that it divides exactly by 4?
  3. 3.Vivaan takes 40 seconds and Meera 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?
  4. 4.How many factors does 32 have?
  5. 5.Aarav scored 5 marks out of 25 in a test. What percentage did Aarav score?
  6. 6.Three temple bells ring every 4, 8 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.A car goes 84 km on 6 litres of petrol. How far can it go on 11 litres (in km)?
  8. 8.Which is closest to 199 × 90? (Round each number first.) (a) 36000 (b) 180000 (c) 18000 (d) 1800
  9. 9.If 7 kg of rice costs ₹252, how many kg can you buy for ₹324?
  10. 10.Which is closest to 804 ÷ 19? (a) 400 (b) 20 (c) 80 (d) 40
  11. 11.How many factors does 63 have?
  12. 12.1/2 × 5/7 =
  13. 13.What is the smallest number you must take away from 311 so that it divides exactly by 13?
  14. 14.How many factors does 16 have?
  15. 15.What is 60% of 470?
  16. 16.25 − 18 ÷ 6 × 2 =
  17. 17.If 7 kg of rice costs ₹441, how many kg can you buy for ₹945?
  18. 18.Which of these numbers divides exactly by 11? (a) 2953 (b) 5545 (c) 7942 (d) 2454
  19. 19.12.6 ÷ 6 =
  20. 20.What is 40% of 530?
  21. 21.Find the LCM of 15, 7 and 3.
  22. 22.What is 5/8 of ₹64?
  23. 23.What is 1/7 of 35 kg?
  24. 24.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 5, 15 or 12.
  25. 25.A hall floor is 175 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  26. 26.What is the smallest number you must add to 793 so that it divides exactly by 4?
  27. 27.If 5 notebooks cost ₹185, how much do 6 notebooks cost (in ₹)?
  28. 28.The ratio of boys to girls in a class is 3 : 4. There are 15 boys. How many girls are there?
  29. 29.Two tanks hold 20 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  30. 30.4.12 + 7.3 =
  31. 31.What percent of 50 is 1?
  32. 32.Find the HCF of 15 and 35.
  33. 33.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  34. 34.A car goes 34 km on 2 litres of petrol. How far can it go on 13 litres (in km)?
  35. 35.Divide ₹272 between Ananya and Vivaan in the ratio 9 : 7. How much does Ananya get (in ₹)?
  36. 36.7 × (19 − 11) + 9 ÷ 3 =
  37. 37.The HCF of two numbers is 6 and their LCM is 84. One of the numbers is 12. What is the other number?
  38. 38.If 2 kg of rice costs ₹104, how many kg can you buy for ₹156?
  39. 39.1/5 + 10/12 =
  40. 40.Find the LCM of 8, 12 and 3.

Answer key

  1. 10
  2. 3
  3. 240
  4. 6
  5. 20
  6. 72
  7. 154
  8. 18000
  9. 9
  10. 40
  11. 6
  12. 5/14
  13. 12
  14. 5
  15. 282
  16. 19
  17. 15
  18. 7942
  19. 2.1
  20. 212
  21. 105
  22. 40
  23. 5
  24. 63
  25. 28
  26. 3
  27. 222
  28. 20
  29. 5
  30. 11.42
  31. 2
  32. 5
  33. 12
  34. 221
  35. 153
  36. 59
  37. 42
  38. 3
  39. 31/30
  40. 24

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