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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 286 · 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. 1.48 ÷ 8 × 2 + 28 =
  2. 2.10 : 7 = 30 : ?
  3. 3.6.58 + 2.5 =
  4. 4.A hostel has enough food for 4 students for 8 days. How many days will the same food last for 16 students?
  5. 5.A hostel has enough food for 3 students for 25 days. How many days will the same food last for 5 students?
  6. 6.The ratio of boys to girls in a class is 5 : 9. There are 40 boys. How many girls are there?
  7. 7.The ratio of boys to girls in a class is 1 : 8. There are 9 boys. How many girls are there?
  8. 8.Which is closest to 504 × 51? (Round each number first.) (a) 25000 (b) 2500 (c) 50000 (d) 250000
  9. 9.3 × (25 − 24) + 9 ÷ 3 =
  10. 10.Find the LCM of 5, 2 and 4.
  11. 11.Two tanks hold 90 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  12. 12.Which of these numbers divides exactly by 8? (a) 5953 (b) 1766 (c) 8019 (d) 3312
  13. 13.How many factors does 35 have?
  14. 14.What percent of 200 is 4?
  15. 15.What is the smallest number you must add to 911 so that it divides exactly by 8?
  16. 16.Divide ₹75 between Nisha and Tara in the ratio 4 : 1. How much does Tara get (in ₹)?
  17. 17.What percent of 50 is 40?
  18. 18.7.67 + 9.8 =
  19. 19.5 × (11 − 6) + 42 ÷ 6 =
  20. 20.How many factors does 79 have?
  21. 21.If 3 pens cost ₹9, how much do 6 pens cost (in ₹)?
  22. 22.Which is closest to 1499 ÷ 29? (a) 500 (b) 100 (c) 25 (d) 50
  23. 23.5 × (14 − 8) + 40 ÷ 8 =
  24. 24.1/2 of 10 + 5 × 3 =
  25. 25.If 9 bottles of juice cost ₹423, how much do 4 bottles of juice cost (in ₹)?
  26. 26.Which of these numbers divides exactly by 3? (a) 5323 (b) 7974 (c) 5849 (d) 9409
  27. 27.Which is closest to 703 + 895 + 599? (a) 2400 (b) 2300 (c) 2200 (d) 2100
  28. 28.Write 19/25 as a percent.
  29. 29.Which is closest to 497 × 90? (Round each number first.) (a) 450000 (b) 4500 (c) 45000 (d) 90000
  30. 30.60% of a number is 228. What is the number?
  31. 31.Find the LCM of 13, 5 and 10.
  32. 32.Find the LCM of 25 and 20.
  33. 33.Find the LCM of 6, 4 and 3.
  34. 34.Sneha takes 30 seconds and Aarav takes 40 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?
  35. 35.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 6, 15 or 3.
  36. 36.Find the HCF of 70 and 126.
  37. 37.The HCF of two numbers is 7 and their LCM is 126. One of the numbers is 14. What is the other number?
  38. 38.Find the smallest number bigger than 9 that leaves a remainder of 3 when divided by 5, 9 or 6.
  39. 39.Which of these numbers divides exactly by 9? (a) 9507 (b) 2432 (c) 8181 (d) 6266
  40. 40.A hall floor is 240 cm long and 200 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 40
  2. 21
  3. 9.08
  4. 2
  5. 15
  6. 72
  7. 72
  8. 25000
  9. 6
  10. 20
  11. 30
  12. 3312
  13. 4
  14. 2
  15. 1
  16. 15
  17. 80
  18. 17.47
  19. 32
  20. 2
  21. 18
  22. 50
  23. 35
  24. 20
  25. 188
  26. 7974
  27. 2200
  28. 76
  29. 45000
  30. 380
  31. 130
  32. 100
  33. 12
  34. 120
  35. 31
  36. 14
  37. 63
  38. 93
  39. 8181
  40. 30

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