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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 149 · 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 399 + 103 + 598? (a) 1000 (b) 1300 (c) 1100 (d) 1200
  2. 2.34 − 9 ÷ 3 × 6 =
  3. 3.Kavya takes 45 seconds and Saanvi takes 72 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.Ishaan takes 30 seconds and Dev takes 72 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?
  5. 5.What is 25% of 4?
  6. 6.A car goes 39 km on 3 litres of petrol. How far can it go on 15 litres (in km)?
  7. 7.How many factors does 37 have?
  8. 8.Find the LCM of 6 and 9.
  9. 9.Saanvi takes 30 seconds and Tara takes 50 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?
  10. 10.7 painters can paint a school in 18 days. How many days would 18 painters take, working at the same speed?
  11. 11.Find the HCF of 42 and 70.
  12. 12.What is the smallest number you must take away from 355 so that it divides exactly by 12?
  13. 13.5% of a number is 30. What is the number?
  14. 14.Which is closest to 400 + 95 + 699? (a) 1100 (b) 1300 (c) 1200 (d) 1400
  15. 15.Find the HCF of 105 and 135.
  16. 16.Find the LCM of 15 and 6.
  17. 17.Which of these numbers divides exactly by 11? (a) 1635 (b) 2955 (c) 4838 (d) 3135
  18. 18.What is the smallest number you must add to 306 so that it divides exactly by 4?
  19. 19.Two tanks hold 180 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.What is the smallest number you must add to 951 so that it divides exactly by 11?
  21. 21.If 2 bottles of juice cost ₹70, how much do 18 bottles of juice cost (in ₹)?
  22. 22.3/12 + 2/7 =
  23. 23.The HCF of two numbers is 8 and their LCM is 144. One of the numbers is 16. What is the other number?
  24. 24.2/3 of 12 + 7 × 6 =
  25. 25.Diya scored 16 marks out of 40 in a test. What percentage did Diya score?
  26. 26.5% of a number is 8. What is the number?
  27. 27.Round 12162 to the nearest hundred.
  28. 28.Which is closest to 97 + 598 + 697? (a) 1300 (b) 1600 (c) 1500 (d) 1400
  29. 29.9.5 ÷ 5 =
  30. 30.1/6 + 1/4 =
  31. 31.What is the smallest number you must add to 261 so that it divides exactly by 7?
  32. 32.3 × (10 − 7) + 9 ÷ 3 =
  33. 33.Find the HCF of 18 and 81.
  34. 34.21 + 9 × 8 − 6 =
  35. 35.Find the LCM of 10, 7 and 2.
  36. 36.Meera takes 90 seconds and Arjun takes 72 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?
  37. 37.Which is closest to 901 ÷ 31? (a) 30 (b) 15 (c) 300 (d) 60
  38. 38.The ratio of boys to girls in a class is 2 : 3. There are 6 boys. How many girls are there?
  39. 39.The ratio of boys to girls in a class is 4 : 3. There are 16 boys. How many girls are there?
  40. 40.Which of these numbers divides exactly by 3? (a) 4603 (b) 3340 (c) 8175 (d) 5756

Answer key

  1. 1100
  2. 16
  3. 360
  4. 360
  5. 1
  6. 195
  7. 2
  8. 18
  9. 150
  10. 7
  11. 14
  12. 7
  13. 600
  14. 1200
  15. 15
  16. 30
  17. 3135
  18. 2
  19. 20
  20. 6
  21. 630
  22. 15/28
  23. 72
  24. 50
  25. 40
  26. 160
  27. 12200
  28. 1400
  29. 1.9
  30. 5/12
  31. 5
  32. 12
  33. 9
  34. 87
  35. 70
  36. 360
  37. 30
  38. 9
  39. 12
  40. 8175

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