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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 237 · 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. 1.255 + 99 =
  2. 2.61 × 4 =
  3. 3.A train leaves at 6:00 and reaches the next city at 6:55. How many minutes is the journey?
  4. 4.Best estimate of 76 × 61? (a) 48000 (b) 480 (c) 4800
  5. 5.17 + 18 =
  6. 6.25% of ₹140 =
  7. 7.2 + ? = 10
  8. 8.10% of ₹580 =
  9. 9.12 + 11 =
  10. 10.Best estimate of 411 + 673? (a) 1100 (b) 1300 (c) 900
  11. 11.What is the remainder when 34 is divided by 3?
  12. 12.12 + 19 =
  13. 13.136 ÷ 8 =
  14. 14.21 + 9 =
  15. 15.144 ÷ 8 =
  16. 16.707 + 99 =
  17. 17.102 − 76 =
  18. 18.26 + 9 =
  19. 19.10% of ₹610 =
  20. 20.144 ÷ 3 =
  21. 21.116 ÷ 4 =
  22. 22.5% of ₹550 =
  23. 23.Best estimate of 57 × 30? (a) 18000 (b) 180 (c) 1800
  24. 24.22 + 21 =
  25. 25.15 + ? = 100
  26. 26.214 − 198 =
  27. 27.12 × 9 =
  28. 28.1 + ? = 10
  29. 29.You start your homework at 2:55 and finish at 4:20. How many minutes did you work?
  30. 30.57 + 7 =
  31. 31.Half of 196 =
  32. 32.You buy a bag of mangoes for ₹218 and pay with a ₹500 note. How much change do you get, in rupees?
  33. 33.14² =
  34. 34.You buy a water bottle for ₹455 and pay with a ₹500 note. How much change do you get, in rupees?
  35. 35.80 − 12 =
  36. 36.50 − 9 =
  37. 37.47 × 4 =
  38. 38.9 + ? = 10
  39. 39.91 − 65 =
  40. 40.What is the remainder when 119 is divided by 8?

Answer key

  1. 354
  2. 244
  3. 55
  4. 4800
  5. 35
  6. 35
  7. 8
  8. 58
  9. 23
  10. 1100
  11. 1
  12. 31
  13. 17
  14. 30
  15. 18
  16. 806
  17. 26
  18. 35
  19. 61
  20. 48
  21. 29
  22. 27.5
  23. 1800
  24. 43
  25. 85
  26. 16
  27. 108
  28. 9
  29. 85
  30. 64
  31. 98
  32. 282
  33. 196
  34. 45
  35. 68
  36. 41
  37. 188
  38. 1
  39. 26
  40. 7

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