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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 769 · 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.Which is closest to 198 × 70? (Round each number first.) (a) 14000 (b) 140000 (c) 28000 (d) 1400
  2. 2.Saanvi takes 72 seconds and Vivaan takes 45 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?
  3. 3.Two tanks hold 30 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.If 10 kites cost ₹90, how much do 18 kites cost (in ₹)?
  5. 5.The HCF of two numbers is 3 and their LCM is 63. One of the numbers is 21. What is the other number?
  6. 6.1/2 − 1/4 =
  7. 7.The ratio of boys to girls in a class is 1 : 7. There are 2 boys. How many girls are there?
  8. 8.103 − 36 ÷ 4 × 8 =
  9. 9.Find the LCM of 9, 3 and 12.
  10. 10.Round 37068 to the nearest thousand.
  11. 11.Three temple bells ring every 8, 24 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.2/4 + 4/10 =
  13. 13.Find the LCM of 14 and 10.
  14. 14.3 × (30 − 27) + 36 ÷ 4 =
  15. 15.(16 + 10) × 7 − 17 =
  16. 16.A car goes 48 km on 6 litres of petrol. How far can it go on 11 litres (in km)?
  17. 17.Divide ₹90 between Rohan and Priya in the ratio 1 : 9. How much does Rohan get (in ₹)?
  18. 18.What is 1/2 of 60 litres?
  19. 19.Which of these numbers divides exactly by 11? (a) 4964 (b) 2215 (c) 2060 (d) 9735
  20. 20.Round 66503 to the nearest thousand.
  21. 21.What percent of 50 is 9?
  22. 22.Which is closest to 899 + 898 + 102? (a) 2000 (b) 1900 (c) 1800 (d) 2100
  23. 23.5% of a number is 19. What is the number?
  24. 24.Which of these numbers divides exactly by 11? (a) 4315 (b) 2387 (c) 8966 (d) 8786
  25. 25.Which of these numbers divides exactly by 9? (a) 2009 (b) 1498 (c) 9297 (d) 4135
  26. 26.Three temple bells ring every 6, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.1.84 + 5.4 =
  28. 28.Which is closest to 1197 ÷ 39? (a) 60 (b) 30 (c) 15 (d) 300
  29. 29.Round 67.79 to one decimal place. =
  30. 30.Which is closest to 702 + 199 + 403? (a) 1300 (b) 1200 (c) 1400 (d) 1500
  31. 31.Two tanks hold 180 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.If 7 kg of rice costs ₹532, how many kg can you buy for ₹988?
  33. 33.Round 75.62 to one decimal place. =
  34. 34.20% of a number is 79. What is the number?
  35. 35.5.83 + 8.1 =
  36. 36.Saanvi scored 4 marks out of 25 in a test. What percentage did Saanvi score?
  37. 37.10 : 6 = 30 : ?
  38. 38.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  39. 39.75 − 28 ÷ 4 × 9 =
  40. 40.50 ÷ 5 × 4 + 19 =

Answer key

  1. 14000
  2. 360
  3. 10
  4. 162
  5. 9
  6. 1/4
  7. 14
  8. 31
  9. 36
  10. 37000
  11. 120
  12. 9/10
  13. 70
  14. 18
  15. 165
  16. 88
  17. 9
  18. 30
  19. 9735
  20. 67000
  21. 18
  22. 1900
  23. 380
  24. 2387
  25. 9297
  26. 60
  27. 7.24
  28. 30
  29. 67.8
  30. 1300
  31. 30
  32. 13
  33. 75.6
  34. 395
  35. 13.93
  36. 16
  37. 18
  38. 75
  39. 12
  40. 59

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