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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 133 · 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. 1.96 ÷ 4 =
  2. 2.216 ÷ 6 =
  3. 3.85 − 38 =
  4. 4.26 + 25 =
  5. 5.Double 18 =
  6. 6.Best estimate of 19 × 48? (a) 100 (b) 10000 (c) 1000
  7. 7.96 − 29 =
  8. 8.125 − 86 =
  9. 9.13 + 12 =
  10. 10.Half of 192 =
  11. 11.You buy a pencil box for ₹18 and pay with a ₹100 note. How much change do you get, in rupees?
  12. 12.88 − 68 =
  13. 13.56 − 31 =
  14. 14.2 + ? = 10
  15. 15.34 laddoos are packed in boxes of 8. How many laddoos are left over?
  16. 16.43 × 4 =
  17. 17.19² =
  18. 18.13 + 14 =
  19. 19.30 × 8 =
  20. 20.79 − 36 =
  21. 21.You buy a water bottle for ₹18 and pay with a ₹100 note. How much change do you get, in rupees?
  22. 22.25% of ₹310 =
  23. 23.10% of ₹280 =
  24. 24.Double 44 =
  25. 25.315 − 294 =
  26. 26.94 − 62 =
  27. 27.513 ÷ 9 =
  28. 28.69 + 19 =
  29. 29.518 ÷ 7 =
  30. 30.295 + 99 =
  31. 31.26 − 19 =
  32. 32.Best estimate of 755 + 168? (a) 1000 (b) 800 (c) 1200
  33. 33.200 ÷ 4 =
  34. 34.154 ÷ 7 =
  35. 35.138 + 99 =
  36. 36.28 × 4 =
  37. 37.16 + ? = 100
  38. 38.33 × 8 =
  39. 39.Double 85 =
  40. 40.891 ÷ 9 =

Answer key

  1. 24
  2. 36
  3. 47
  4. 51
  5. 36
  6. 1000
  7. 67
  8. 39
  9. 25
  10. 96
  11. 82
  12. 20
  13. 25
  14. 8
  15. 2
  16. 172
  17. 361
  18. 27
  19. 240
  20. 43
  21. 82
  22. 77.5
  23. 28
  24. 88
  25. 21
  26. 32
  27. 57
  28. 88
  29. 74
  30. 394
  31. 7
  32. 1000
  33. 50
  34. 22
  35. 237
  36. 112
  37. 84
  38. 264
  39. 170
  40. 99

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