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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 202 · 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. 1.75 + 8 =
  2. 2.11 + 12 =
  3. 3.11 + 13 =
  4. 4.40 + ? = 100
  5. 5.57 − 16 =
  6. 6.99 × 7 =
  7. 7.28 + 74 =
  8. 8.What is the remainder when 100 is divided by 8?
  9. 9.14 × 7 =
  10. 10.17 + 18 =
  11. 11.9 + 9 =
  12. 12.56 + 63 =
  13. 13.79 + 3 =
  14. 14.1 + ? = 10
  15. 15.52 − 41 =
  16. 16.34 − 29 =
  17. 17.27 + 26 =
  18. 18.You buy a storybook for ₹17 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
  19. 19.Double 22 =
  20. 20.23 + 22 =
  21. 21.52 + ? = 100
  22. 22.9 + ? = 10
  23. 23.You buy a box of crayons for ₹63 and pay with a ₹100 note. How much change do you get, in rupees?
  24. 24.Double 78 =
  25. 25.32 children stand in rows of 6. How many full rows can they make?
  26. 26.72 + 67 =
  27. 27.68 + 32 =
  28. 28.16² =
  29. 29.81 × 4 =
  30. 30.91 × 6 =
  31. 31.44 laddoos are packed in boxes of 6. How many laddoos are left over?
  32. 32.34 × 4 =
  33. 33.20 + 9 =
  34. 34.105 − 76 =
  35. 35.A train leaves at 5:00 and reaches the next city at 6:40. How many minutes is the journey?
  36. 36.16 + 9 =
  37. 37.31 + ? = 100
  38. 38.30 + ? = 100
  39. 39.312 ÷ 8 =
  40. 40.15 + ? = 100

Answer key

  1. 83
  2. 23
  3. 24
  4. 60
  5. 41
  6. 693
  7. 102
  8. 4
  9. 98
  10. 35
  11. 18
  12. 119
  13. 82
  14. 9
  15. 11
  16. 5
  17. 53
  18. 63
  19. 44
  20. 45
  21. 48
  22. 1
  23. 37
  24. 156
  25. 5
  26. 139
  27. 100
  28. 256
  29. 324
  30. 546
  31. 2
  32. 136
  33. 29
  34. 29
  35. 100
  36. 25
  37. 69
  38. 70
  39. 39
  40. 85

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