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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 84 · 40 questions
TalentJR

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

NameDateTime takenScore ___ / 40
  1. 1.Best estimate of 97 × 36? (a) 400 (b) 40000 (c) 4000
  2. 2.68 ÷ 4 =
  3. 3.29 + 3 =
  4. 4.12² =
  5. 5.66 + 19 =
  6. 6.58 + 41 =
  7. 7.69 + 2 =
  8. 8.456 ÷ 6 =
  9. 9.10% of ₹360 =
  10. 10.16² =
  11. 11.248 ÷ 8 =
  12. 12.5 + ? = 10
  13. 13.227 − 195 =
  14. 14.35 + ? = 100
  15. 15.84 × 6 =
  16. 16.You buy a kite for ₹16 and a pen for ₹14. You pay with a ₹100 note. How much change do you get, in rupees?
  17. 17.10% of ₹770 =
  18. 18.34 + ? = 100
  19. 19.What is the remainder when 42 is divided by 4?
  20. 20.42 + ? = 100
  21. 21.200 ÷ 8 =
  22. 22.84 ÷ 4 =
  23. 23.Half of 30 =
  24. 24.50% of ₹870 =
  25. 25.54 − 38 =
  26. 26.120 ÷ 8 =
  27. 27.116 ÷ 4 =
  28. 28.144 ÷ 4 =
  29. 29.92 − 74 =
  30. 30.83 − 59 =
  31. 31.29 + 4 =
  32. 32.3 + ? = 10
  33. 33.Double 81 =
  34. 34.Best estimate of 646 + 754? (a) 1600 (b) 1400 (c) 1200
  35. 35.21² =
  36. 36.94 − 49 =
  37. 37.23 + 24 =
  38. 38.25 + 27 =
  39. 39.7 + 6 =
  40. 40.A film starts at 4:45 and ends at 5:15. How many minutes long is the film?

Answer key

  1. 4000
  2. 17
  3. 32
  4. 144
  5. 85
  6. 99
  7. 71
  8. 76
  9. 36
  10. 256
  11. 31
  12. 5
  13. 32
  14. 65
  15. 504
  16. 70
  17. 77
  18. 66
  19. 2
  20. 58
  21. 25
  22. 21
  23. 15
  24. 435
  25. 16
  26. 15
  27. 29
  28. 36
  29. 18
  30. 24
  31. 33
  32. 7
  33. 162
  34. 1400
  35. 441
  36. 45
  37. 47
  38. 52
  39. 13
  40. 30

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