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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 92 · 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.You buy a pencil box for ₹25 and pay with a ₹100 note. How much change do you get, in rupees?
  2. 2.What is the remainder when 44 is divided by 6?
  3. 3.82 laddoos are packed in boxes of 6. How many laddoos are left over?
  4. 4.Double 32 =
  5. 5.45 + ? = 100
  6. 6.Half of 114 =
  7. 7.69 − 9 =
  8. 8.2 + ? = 10
  9. 9.14 + 29 =
  10. 10.147 ÷ 7 =
  11. 11.5% of ₹760 =
  12. 12.Half of 76 =
  13. 13.88 ÷ 8 =
  14. 14.4 + ? = 10
  15. 15.74 + 24 =
  16. 16.74 children stand in rows of 6. How many full rows can they make?
  17. 17.12² =
  18. 18.Best estimate of 764 + 282? (a) 1100 (b) 1300 (c) 900
  19. 19.14 + 15 =
  20. 20.3 + ? = 10
  21. 21.22 + 23 =
  22. 22.25² =
  23. 23.Best estimate of 86 × 64? (a) 540 (b) 5400 (c) 54000
  24. 24.19 × 8 =
  25. 25.329 ÷ 7 =
  26. 26.319 − 291 =
  27. 27.29 + 64 =
  28. 28.770 + 99 =
  29. 29.23 × 8 =
  30. 30.77 + 29 =
  31. 31.35 + 8 =
  32. 32.16 × 8 =
  33. 33.Best estimate of 46 × 96? (a) 500 (b) 5000 (c) 50000
  34. 34.Best estimate of 338 + 620? (a) 700 (b) 1100 (c) 900
  35. 35.Half of 190 =
  36. 36.46 + 8 =
  37. 37.5% of ₹550 =
  38. 38.71 × 4 =
  39. 39.35 + 9 =
  40. 40.Double 43 =

Answer key

  1. 75
  2. 2
  3. 4
  4. 64
  5. 55
  6. 57
  7. 60
  8. 8
  9. 43
  10. 21
  11. 38
  12. 38
  13. 11
  14. 6
  15. 98
  16. 12
  17. 144
  18. 1100
  19. 29
  20. 7
  21. 45
  22. 625
  23. 5400
  24. 152
  25. 47
  26. 28
  27. 93
  28. 869
  29. 184
  30. 106
  31. 43
  32. 128
  33. 5000
  34. 900
  35. 95
  36. 54
  37. 27.5
  38. 284
  39. 44
  40. 86

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