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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 587 · 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. 1.10% of ₹160 =
  2. 2.19 + 20 =
  3. 3.66 − 26 =
  4. 4.Best estimate of 445 + 346? (a) 700 (b) 500 (c) 900
  5. 5.85 − 44 =
  6. 6.17 + 19 =
  7. 7.135 ÷ 3 =
  8. 8.145 ÷ 5 =
  9. 9.38 + 73 =
  10. 10.88 ÷ 8 =
  11. 11.16 × 4 =
  12. 12.25% of ₹230 =
  13. 13.22 + 21 =
  14. 14.288 ÷ 8 =
  15. 15.63 + ? = 100
  16. 16.Best estimate of 26 × 32? (a) 900 (b) 90 (c) 9000
  17. 17.1022 − 994 =
  18. 18.24 + 23 =
  19. 19.7 + 4 =
  20. 20.110 − 67 =
  21. 21.64 − 26 =
  22. 22.96 ÷ 8 =
  23. 23.20 × 8 =
  24. 24.77 × 8 =
  25. 25.59 + ? = 100
  26. 26.23 + 19 =
  27. 27.304 ÷ 4 =
  28. 28.You start your homework at 6:00 and finish at 8:55. How many minutes did you work?
  29. 29.14 × 8 =
  30. 30.62 − 23 =
  31. 31.35 × 6 =
  32. 32.111 children stand in rows of 8. How many full rows can they make?
  33. 33.80 ÷ 5 =
  34. 34.40 children stand in rows of 3. How many full rows can they make?
  35. 35.475 ÷ 5 =
  36. 36.Half of 152 =
  37. 37.34 × 8 =
  38. 38.91 children stand in rows of 6. How many full rows can they make?
  39. 39.Best estimate of 67 × 66? (a) 4900 (b) 490 (c) 49000
  40. 40.95 laddoos are packed in boxes of 7. How many laddoos are left over?

Answer key

  1. 16
  2. 39
  3. 40
  4. 700
  5. 41
  6. 36
  7. 45
  8. 29
  9. 111
  10. 11
  11. 64
  12. 57.5
  13. 43
  14. 36
  15. 37
  16. 900
  17. 28
  18. 47
  19. 11
  20. 43
  21. 38
  22. 12
  23. 160
  24. 616
  25. 41
  26. 42
  27. 76
  28. 175
  29. 112
  30. 39
  31. 210
  32. 13
  33. 16
  34. 13
  35. 95
  36. 76
  37. 272
  38. 15
  39. 4900
  40. 4

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