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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 152 · 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. 1.66 − 13 =
  2. 2.78 − 58 =
  3. 3.24 × 9 =
  4. 4.30 + 29 =
  5. 5.58 + 4 =
  6. 6.70 + 31 =
  7. 7.Half of 80 =
  8. 8.10% of ₹810 =
  9. 9.35 laddoos are packed in boxes of 3. How many laddoos are left over?
  10. 10.76 − 27 =
  11. 11.56 + 9 =
  12. 12.6 + 5 =
  13. 13.205 ÷ 5 =
  14. 14.44 laddoos are packed in boxes of 3. How many laddoos are left over?
  15. 15.You buy a cricket ball for ₹298 and pay with a ₹500 note. How much change do you get, in rupees?
  16. 16.Best estimate of 47 × 42? (a) 200 (b) 2000 (c) 20000
  17. 17.What is the remainder when 78 is divided by 8?
  18. 18.Half of 130 =
  19. 19.22 × 4 =
  20. 20.70 ÷ 5 =
  21. 21.A train leaves at 2:00 and reaches the next city at 3:50. How many minutes is the journey?
  22. 22.13 × 8 =
  23. 23.14² =
  24. 24.192 ÷ 4 =
  25. 25.180 ÷ 5 =
  26. 26.74 × 4 =
  27. 27.Half of 126 =
  28. 28.91 − 71 =
  29. 29.5% of ₹810 =
  30. 30.41 × 6 =
  31. 31.17 × 4 =
  32. 32.130 ÷ 5 =
  33. 33.9 + ? = 10
  34. 34.99 − 34 =
  35. 35.61 × 4 =
  36. 36.82 + ? = 100
  37. 37.Best estimate of 76 × 41? (a) 320 (b) 32000 (c) 3200
  38. 38.16 × 4 =
  39. 39.29 × 4 =
  40. 40.74 + 79 =

Answer key

  1. 53
  2. 20
  3. 216
  4. 59
  5. 62
  6. 101
  7. 40
  8. 81
  9. 2
  10. 49
  11. 65
  12. 11
  13. 41
  14. 2
  15. 202
  16. 2000
  17. 6
  18. 65
  19. 88
  20. 14
  21. 110
  22. 104
  23. 196
  24. 48
  25. 36
  26. 296
  27. 63
  28. 20
  29. 40.5
  30. 246
  31. 68
  32. 26
  33. 1
  34. 65
  35. 244
  36. 18
  37. 3200
  38. 64
  39. 116
  40. 153

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