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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 71 · 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. 1.47 × 6 =
  2. 2.10% of ₹310 =
  3. 3.Best estimate of 22 × 96? (a) 200 (b) 20000 (c) 2000
  4. 4.25% of ₹50 =
  5. 5.56 + 8 =
  6. 6.Half of 142 =
  7. 7.248 ÷ 8 =
  8. 8.46 children stand in rows of 4. How many full rows can they make?
  9. 9.36 × 6 =
  10. 10.You buy a bag of mangoes for ₹281 and pay with a ₹500 note. How much change do you get, in rupees?
  11. 11.25 + 27 =
  12. 12.18 + 20 =
  13. 13.92 − 67 =
  14. 14.22² =
  15. 15.20 + 9 =
  16. 16.26 + 6 =
  17. 17.21 + ? = 100
  18. 18.13 + 12 =
  19. 19.89 + 5 =
  20. 20.54 + ? = 100
  21. 21.103 − 78 =
  22. 22.Half of 128 =
  23. 23.88 laddoos are packed in boxes of 9. How many laddoos are left over?
  24. 24.You start your homework at 3:05 and finish at 6:10. How many minutes did you work?
  25. 25.98 − 68 =
  26. 26.What is the remainder when 107 is divided by 9?
  27. 27.72 ÷ 4 =
  28. 28.31 + 9 =
  29. 29.11 + 12 =
  30. 30.Double 21 =
  31. 31.303 − 278 =
  32. 32.67 + 58 =
  33. 33.47 laddoos are packed in boxes of 6. How many laddoos are left over?
  34. 34.50% of ₹450 =
  35. 35.520 − 99 =
  36. 36.10% of ₹760 =
  37. 37.12 + 14 =
  38. 38.385 ÷ 5 =
  39. 39.25 − 19 =
  40. 40.65 + 29 =

Answer key

  1. 282
  2. 31
  3. 2000
  4. 12.5
  5. 64
  6. 71
  7. 31
  8. 11
  9. 216
  10. 219
  11. 52
  12. 38
  13. 25
  14. 484
  15. 29
  16. 32
  17. 79
  18. 25
  19. 94
  20. 46
  21. 25
  22. 64
  23. 7
  24. 185
  25. 30
  26. 8
  27. 18
  28. 40
  29. 23
  30. 42
  31. 25
  32. 125
  33. 5
  34. 225
  35. 421
  36. 76
  37. 26
  38. 77
  39. 6
  40. 94

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