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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 597 · 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. 1.73 × 6 =
  2. 2.658 + 99 =
  3. 3.Half of 156 =
  4. 4.306 − 290 =
  5. 5.464 ÷ 8 =
  6. 6.28 laddoos are packed in boxes of 3. How many laddoos are left over?
  7. 7.21 + ? = 100
  8. 8.A film starts at 6:45 and ends at 8:35. How many minutes long is the film?
  9. 9.Half of 90 =
  10. 10.88 + 22 =
  11. 11.77 × 3 =
  12. 12.75 + 19 =
  13. 13.87 + 5 =
  14. 14.6 + 8 =
  15. 15.19 + 8 =
  16. 16.10% of ₹230 =
  17. 17.8 + 10 =
  18. 18.You buy a kite for ₹30 and pay with a ₹100 note. How much change do you get, in rupees?
  19. 19.23 + ? = 100
  20. 20.106 − 70 =
  21. 21.62 − 49 =
  22. 22.Half of 128 =
  23. 23.78 − 16 =
  24. 24.80 − 36 =
  25. 25.27 + 4 =
  26. 26.31 × 8 =
  27. 27.12 × 4 =
  28. 28.204 ÷ 4 =
  29. 29.65 × 4 =
  30. 30.Best estimate of 164 + 666? (a) 900 (b) 700 (c) 1100
  31. 31.29 × 8 =
  32. 32.58 children stand in rows of 8. How many full rows can they make?
  33. 33.232 ÷ 4 =
  34. 34.What is the remainder when 115 is divided by 8?
  35. 35.4 + ? = 10
  36. 36.You buy a bag of mangoes for ₹49 and pay with a ₹100 note. How much change do you get, in rupees?
  37. 37.2 + ? = 10
  38. 38.10% of ₹900 =
  39. 39.97 − 81 =
  40. 40.22 + 23 =

Answer key

  1. 438
  2. 757
  3. 78
  4. 16
  5. 58
  6. 1
  7. 79
  8. 110
  9. 45
  10. 110
  11. 231
  12. 94
  13. 92
  14. 14
  15. 27
  16. 23
  17. 18
  18. 70
  19. 77
  20. 36
  21. 13
  22. 64
  23. 62
  24. 44
  25. 31
  26. 248
  27. 48
  28. 51
  29. 260
  30. 900
  31. 232
  32. 7
  33. 58
  34. 3
  35. 6
  36. 51
  37. 8
  38. 90
  39. 16
  40. 45

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