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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 725 · 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. 1.6 + 6 =
  2. 2.1018 − 986 =
  3. 3.58 + 29 =
  4. 4.Double 72 =
  5. 5.164 ÷ 4 =
  6. 6.79 + 5 =
  7. 7.13² =
  8. 8.74 + 42 =
  9. 9.53 − 39 =
  10. 10.71 × 8 =
  11. 11.288 ÷ 9 =
  12. 12.35 × 8 =
  13. 13.660 + 99 =
  14. 14.24 × 3 =
  15. 15.You buy a notebook for ₹37 and pay with a ₹100 note. How much change do you get, in rupees?
  16. 16.52 + ? = 100
  17. 17.168 ÷ 8 =
  18. 18.Best estimate of 78 × 98? (a) 8000 (b) 80000 (c) 800
  19. 19.You buy a water bottle for ₹89 and pay with a ₹100 note. How much change do you get, in rupees?
  20. 20.50% of ₹500 =
  21. 21.8 + 7 =
  22. 22.50% of ₹270 =
  23. 23.34 × 8 =
  24. 24.30 + 57 =
  25. 25.You buy a bag of mangoes for ₹200 and pay with a ₹500 note. How much change do you get, in rupees?
  26. 26.51 × 3 =
  27. 27.80 − 9 =
  28. 28.31 × 5 =
  29. 29.50% of ₹260 =
  30. 30.91 × 9 =
  31. 31.887 − 99 =
  32. 32.378 ÷ 6 =
  33. 33.Best estimate of 36 × 13? (a) 4000 (b) 40 (c) 400
  34. 34.84 ÷ 6 =
  35. 35.40 + ? = 100
  36. 36.38 × 8 =
  37. 37.55 × 5 =
  38. 38.39 − 19 =
  39. 39.37 × 4 =
  40. 40.39 + 29 =

Answer key

  1. 12
  2. 32
  3. 87
  4. 144
  5. 41
  6. 84
  7. 169
  8. 116
  9. 14
  10. 568
  11. 32
  12. 280
  13. 759
  14. 72
  15. 63
  16. 48
  17. 21
  18. 8000
  19. 11
  20. 250
  21. 15
  22. 135
  23. 272
  24. 87
  25. 300
  26. 153
  27. 71
  28. 155
  29. 130
  30. 819
  31. 788
  32. 63
  33. 400
  34. 14
  35. 60
  36. 304
  37. 275
  38. 20
  39. 148
  40. 68

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