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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 297 · 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. 1.666 ÷ 9 =
  2. 2.23 + 29 =
  3. 3.21 × 4 =
  4. 4.39 + 9 =
  5. 5.Best estimate of 848 + 513? (a) 1300 (b) 1500 (c) 1100
  6. 6.18 × 9 =
  7. 7.9 + ? = 10
  8. 8.58 × 4 =
  9. 9.85 − 38 =
  10. 10.A train leaves at 8:25 and reaches the next city at 9:50. How many minutes is the journey?
  11. 11.2 + ? = 10
  12. 12.97 laddoos are packed in boxes of 7. How many laddoos are left over?
  13. 13.96 ÷ 8 =
  14. 14.5% of ₹690 =
  15. 15.62 × 4 =
  16. 16.50 − 29 =
  17. 17.76 + 31 =
  18. 18.9 + 6 =
  19. 19.Best estimate of 98 × 68? (a) 7000 (b) 70000 (c) 700
  20. 20.Half of 166 =
  21. 21.80 − 42 =
  22. 22.36 + 7 =
  23. 23.10 + 11 =
  24. 24.Double 32 =
  25. 25.73 laddoos are packed in boxes of 7. How many laddoos are left over?
  26. 26.101 − 93 =
  27. 27.Best estimate of 528 + 440? (a) 700 (b) 1100 (c) 900
  28. 28.25 + 9 =
  29. 29.89 + ? = 100
  30. 30.74 + 9 =
  31. 31.You buy a storybook for ₹42 and a pen for ₹40. You pay with a ₹100 note. How much change do you get, in rupees?
  32. 32.33 × 5 =
  33. 33.56 ÷ 4 =
  34. 34.73 laddoos are packed in boxes of 5. How many laddoos are left over?
  35. 35.3 + ? = 10
  36. 36.156 ÷ 4 =
  37. 37.25 + 27 =
  38. 38.30 + 12 =
  39. 39.You buy a cricket ball for ₹384 and pay with a ₹500 note. How much change do you get, in rupees?
  40. 40.762 + 99 =

Answer key

  1. 74
  2. 52
  3. 84
  4. 48
  5. 1300
  6. 162
  7. 1
  8. 232
  9. 47
  10. 85
  11. 8
  12. 6
  13. 12
  14. 34.5
  15. 248
  16. 21
  17. 107
  18. 15
  19. 7000
  20. 83
  21. 38
  22. 43
  23. 21
  24. 64
  25. 3
  26. 8
  27. 900
  28. 34
  29. 11
  30. 83
  31. 18
  32. 165
  33. 14
  34. 3
  35. 7
  36. 39
  37. 52
  38. 42
  39. 116
  40. 861

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