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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 987 · 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. 1.15 + 17 =
  2. 2.80 − 44 =
  3. 3.27² =
  4. 4.12 − 9 =
  5. 5.60 ÷ 4 =
  6. 6.65 − 17 =
  7. 7.93 − 59 =
  8. 8.26 + 27 =
  9. 9.78 ÷ 6 =
  10. 10.317 − 284 =
  11. 11.70 + ? = 100
  12. 12.A train leaves at 8:35 and reaches the next city at 9:10. How many minutes is the journey?
  13. 13.52 − 37 =
  14. 14.224 ÷ 4 =
  15. 15.59 − 19 =
  16. 16.62 + 67 =
  17. 17.75 + 58 =
  18. 18.25% of ₹850 =
  19. 19.50% of ₹320 =
  20. 20.176 ÷ 8 =
  21. 21.Half of 46 =
  22. 22.68 + ? = 100
  23. 23.Double 89 =
  24. 24.You start your homework at 5:40 and finish at 8:00. How many minutes did you work?
  25. 25.6 + 5 =
  26. 26.96 ÷ 4 =
  27. 27.217 − 180 =
  28. 28.25% of ₹280 =
  29. 29.216 ÷ 4 =
  30. 30.43 + ? = 100
  31. 31.What is the remainder when 29 is divided by 5?
  32. 32.50 + 21 =
  33. 33.5% of ₹480 =
  34. 34.46 + ? = 100
  35. 35.77 − 9 =
  36. 36.86 × 7 =
  37. 37.Best estimate of 66 × 74? (a) 49000 (b) 4900 (c) 490
  38. 38.538 − 99 =
  39. 39.74 × 4 =
  40. 40.12 × 4 =

Answer key

  1. 32
  2. 36
  3. 729
  4. 3
  5. 15
  6. 48
  7. 34
  8. 53
  9. 13
  10. 33
  11. 30
  12. 35
  13. 15
  14. 56
  15. 40
  16. 129
  17. 133
  18. 212.5
  19. 160
  20. 22
  21. 23
  22. 32
  23. 178
  24. 140
  25. 11
  26. 24
  27. 37
  28. 70
  29. 54
  30. 57
  31. 4
  32. 71
  33. 24
  34. 54
  35. 68
  36. 602
  37. 4900
  38. 439
  39. 296
  40. 48

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