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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 123 · 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.Double 99 =
  2. 2.Best estimate of 205 + 422? (a) 400 (b) 600 (c) 800
  3. 3.37 + 61 =
  4. 4.91 × 5 =
  5. 5.303 − 293 =
  6. 6.22 + ? = 100
  7. 7.96 ÷ 3 =
  8. 8.55 + ? = 100
  9. 9.43 × 4 =
  10. 10.A train leaves at 1:30 and reaches the next city at 3:55. How many minutes is the journey?
  11. 11.A train leaves at 2:15 and reaches the next city at 5:35. How many minutes is the journey?
  12. 12.A train leaves at 7:55 and reaches the next city at 9:55. How many minutes is the journey?
  13. 13.49 + 19 =
  14. 14.63 × 9 =
  15. 15.222 ÷ 3 =
  16. 16.25% of ₹530 =
  17. 17.44 − 9 =
  18. 18.256 ÷ 4 =
  19. 19.9 + 10 =
  20. 20.549 ÷ 9 =
  21. 21.221 − 196 =
  22. 22.248 ÷ 8 =
  23. 23.502 − 477 =
  24. 24.516 − 494 =
  25. 25.Best estimate of 268 + 698? (a) 1200 (b) 1000 (c) 800
  26. 26.20 + ? = 100
  27. 27.6 + 7 =
  28. 28.3 + ? = 10
  29. 29.7 + 4 =
  30. 30.A cricket match starts at 6:15 and the first innings ends at 9:20. How many minutes did the innings last?
  31. 31.34 × 6 =
  32. 32.A train leaves at 2:30 and reaches the next city at 3:20. How many minutes is the journey?
  33. 33.459 ÷ 9 =
  34. 34.You buy a box of crayons for ₹30 and a pen for ₹36. You pay with a ₹100 note. How much change do you get, in rupees?
  35. 35.72 − 21 =
  36. 36.10% of ₹250 =
  37. 37.50% of ₹140 =
  38. 38.62 − 26 =
  39. 39.94 − 84 =
  40. 40.28 + 29 =

Answer key

  1. 198
  2. 600
  3. 98
  4. 455
  5. 10
  6. 78
  7. 32
  8. 45
  9. 172
  10. 145
  11. 200
  12. 120
  13. 68
  14. 567
  15. 74
  16. 132.5
  17. 35
  18. 64
  19. 19
  20. 61
  21. 25
  22. 31
  23. 25
  24. 22
  25. 1000
  26. 80
  27. 13
  28. 7
  29. 11
  30. 185
  31. 204
  32. 50
  33. 51
  34. 34
  35. 51
  36. 25
  37. 70
  38. 36
  39. 10
  40. 57

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