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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 303 · 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. 1.5% of ₹520 =
  2. 2.105 ÷ 5 =
  3. 3.17² =
  4. 4.195 ÷ 3 =
  5. 5.224 ÷ 4 =
  6. 6.25% of ₹420 =
  7. 7.62 + 77 =
  8. 8.You buy a notebook for ₹57 and pay with a ₹100 note. How much change do you get, in rupees?
  9. 9.351 ÷ 9 =
  10. 10.79 − 19 =
  11. 11.38 + 8 =
  12. 12.A cricket match starts at 3:30 and the first innings ends at 5:55. How many minutes did the innings last?
  13. 13.370 + 99 =
  14. 14.Best estimate of 56 × 27? (a) 18000 (b) 180 (c) 1800
  15. 15.14 × 3 =
  16. 16.You buy a storybook for ₹29 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
  17. 17.21² =
  18. 18.19 + ? = 100
  19. 19.13² =
  20. 20.27² =
  21. 21.15 + 16 =
  22. 22.26 × 8 =
  23. 23.67 × 9 =
  24. 24.You buy a water bottle for ₹56 and pay with a ₹100 note. How much change do you get, in rupees?
  25. 25.You buy a box of crayons for ₹67 and pay with a ₹100 note. How much change do you get, in rupees?
  26. 26.Half of 152 =
  27. 27.45 + 7 =
  28. 28.82 laddoos are packed in boxes of 9. How many laddoos are left over?
  29. 29.You buy a notebook for ₹258 and pay with a ₹500 note. How much change do you get, in rupees?
  30. 30.Best estimate of 403 + 154? (a) 600 (b) 400 (c) 800
  31. 31.5% of ₹900 =
  32. 32.305 − 293 =
  33. 33.You buy a storybook for ₹45 and pay with a ₹100 note. How much change do you get, in rupees?
  34. 34.68 + ? = 100
  35. 35.You buy a cricket ball for ₹40 and pay with a ₹100 note. How much change do you get, in rupees?
  36. 36.Double 32 =
  37. 37.17 + 18 =
  38. 38.You buy a notebook for ₹30 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
  39. 39.You buy a box of crayons for ₹182 and pay with a ₹500 note. How much change do you get, in rupees?
  40. 40.A train leaves at 3:50 and reaches the next city at 5:25. How many minutes is the journey?

Answer key

  1. 26
  2. 21
  3. 289
  4. 65
  5. 56
  6. 105
  7. 139
  8. 43
  9. 39
  10. 60
  11. 46
  12. 145
  13. 469
  14. 1800
  15. 42
  16. 51
  17. 441
  18. 81
  19. 169
  20. 729
  21. 31
  22. 208
  23. 603
  24. 44
  25. 33
  26. 76
  27. 52
  28. 1
  29. 242
  30. 600
  31. 45
  32. 12
  33. 55
  34. 32
  35. 60
  36. 64
  37. 35
  38. 39
  39. 318
  40. 95

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