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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 292 · 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. 1.72 + 29 =
  2. 2.29 + 8 =
  3. 3.24 + 26 =
  4. 4.55 − 18 =
  5. 5.What is the remainder when 68 is divided by 6?
  6. 6.41 × 3 =
  7. 7.63 − 9 =
  8. 8.107 children stand in rows of 9. How many full rows can they make?
  9. 9.21² =
  10. 10.53 × 3 =
  11. 11.31 × 8 =
  12. 12.What is the remainder when 28 is divided by 3?
  13. 13.15 + 9 =
  14. 14.Half of 162 =
  15. 15.828 ÷ 9 =
  16. 16.58 + 6 =
  17. 17.96 ÷ 4 =
  18. 18.54 + 77 =
  19. 19.28² =
  20. 20.8 + 9 =
  21. 21.96 ÷ 6 =
  22. 22.Double 81 =
  23. 23.You buy a kite for ₹35 and a pen for ₹33. You pay with a ₹100 note. How much change do you get, in rupees?
  24. 24.50% of ₹210 =
  25. 25.18 + ? = 100
  26. 26.77 + 9 =
  27. 27.8 + ? = 10
  28. 28.53 children stand in rows of 8. How many full rows can they make?
  29. 29.48 + 33 =
  30. 30.432 ÷ 9 =
  31. 31.22 × 4 =
  32. 32.87 ÷ 3 =
  33. 33.21 + 20 =
  34. 34.175 ÷ 7 =
  35. 35.53 − 32 =
  36. 36.Best estimate of 49 × 76? (a) 4000 (b) 400 (c) 40000
  37. 37.86 × 6 =
  38. 38.204 ÷ 4 =
  39. 39.3 + ? = 10
  40. 40.12 + 11 =

Answer key

  1. 101
  2. 37
  3. 50
  4. 37
  5. 2
  6. 123
  7. 54
  8. 11
  9. 441
  10. 159
  11. 248
  12. 1
  13. 24
  14. 81
  15. 92
  16. 64
  17. 24
  18. 131
  19. 784
  20. 17
  21. 16
  22. 162
  23. 32
  24. 105
  25. 82
  26. 86
  27. 2
  28. 6
  29. 81
  30. 48
  31. 88
  32. 29
  33. 41
  34. 25
  35. 21
  36. 4000
  37. 516
  38. 51
  39. 7
  40. 23

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