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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 56 · 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.The ratio of boys to girls in a class is 1 : 6. There are 3 boys. How many girls are there?
  2. 2.Which is closest to 302 × 42? (Round each number first.) (a) 120000 (b) 1200 (c) 24000 (d) 12000
  3. 3.Two tanks hold 40 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.Which is closest to 792 ÷ 21? (a) 400 (b) 20 (c) 80 (d) 40
  5. 5.What percent of 80 is 20?
  6. 6.2 × (20 − 6) + 30 ÷ 6 =
  7. 7.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 12, 15 or 6.
  8. 8.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  9. 9.Find the LCM of 15, 6 and 2.
  10. 10.6/10 × 4/5 =
  11. 11.What is the smallest number you must add to 286 so that it divides exactly by 7?
  12. 12.What is 4/7 of 161 kg?
  13. 13.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 10, 8 or 12.
  14. 14.Which of these numbers divides exactly by 4? (a) 8824 (b) 7253 (c) 8485 (d) 3114
  15. 15.2/3 × 1/2 =
  16. 16.11 : 5 = 77 : ?
  17. 17.Vivaan takes 60 seconds and Tara 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?
  18. 18.Nisha takes 80 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?
  19. 19.Round 78827 to the nearest ten.
  20. 20.11 : 2 = 77 : ?
  21. 21.Write 19/20 as a percent.
  22. 22.How many factors does 63 have?
  23. 23.75% of a number is 402. What is the number?
  24. 24.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 5, 9 or 3.
  25. 25.80% of a number is 164. What is the number?
  26. 26.Round 6577 to the nearest hundred.
  27. 27.Divide ₹248 between Diya and Saanvi in the ratio 7 : 1. How much does Saanvi get (in ₹)?
  28. 28.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 8 or 4.
  29. 29.A car goes 264 km on 11 litres of petrol. How far can it go on 19 litres (in km)?
  30. 30.Find the HCF of 28 and 16.
  31. 31.What is the smallest number you must take away from 109 so that it divides exactly by 13?
  32. 32.Which of these numbers divides exactly by 4? (a) 7561 (b) 4509 (c) 1474 (d) 2512
  33. 33.4 × (13 − 10) + 18 ÷ 3 =
  34. 34.Write 3/5 as a percent.
  35. 35.How many factors does 51 have?
  36. 36.What is 5% of 600?
  37. 37.5/6 of 24 + 6 × 2 =
  38. 38.What is 3/8 of 32 students?
  39. 39.Which of these numbers divides exactly by 6? (a) 1432 (b) 4405 (c) 8752 (d) 2364
  40. 40.Find the LCM of 3 and 2.

Answer key

  1. 18
  2. 12000
  3. 20
  4. 40
  5. 25
  6. 33
  7. 63
  8. 45
  9. 30
  10. 12/25
  11. 1
  12. 92
  13. 124
  14. 8824
  15. 1/3
  16. 35
  17. 180
  18. 240
  19. 78830
  20. 14
  21. 95
  22. 6
  23. 536
  24. 46
  25. 205
  26. 6600
  27. 31
  28. 26
  29. 456
  30. 4
  31. 5
  32. 2512
  33. 18
  34. 60
  35. 4
  36. 30
  37. 32
  38. 12
  39. 2364
  40. 6

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