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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 574 · 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. 1.84 − 63 =
  2. 2.29 + 9 =
  3. 3.59 − 41 =
  4. 4.164 ÷ 4 =
  5. 5.Double 45 =
  6. 6.37 + ? = 100
  7. 7.You buy a cricket ball for ₹322 and pay with a ₹500 note. How much change do you get, in rupees?
  8. 8.Best estimate of 33 × 77? (a) 240 (b) 24000 (c) 2400
  9. 9.4 + ? = 10
  10. 10.307 − 278 =
  11. 11.Best estimate of 50 × 93? (a) 4500 (b) 450 (c) 45000
  12. 12.24² =
  13. 13.67 + 4 =
  14. 14.21 × 8 =
  15. 15.51 ÷ 3 =
  16. 16.74 + 34 =
  17. 17.1 + ? = 10
  18. 18.Best estimate of 381 + 493? (a) 1100 (b) 900 (c) 700
  19. 19.32 + ? = 100
  20. 20.89 + 8 =
  21. 21.230 − 195 =
  22. 22.102 ÷ 3 =
  23. 23.Best estimate of 297 + 581? (a) 1100 (b) 900 (c) 700
  24. 24.21 + 22 =
  25. 25.21² =
  26. 26.19 + 20 =
  27. 27.1021 − 996 =
  28. 28.You buy a bag of mangoes for ₹85 and pay with a ₹100 note. How much change do you get, in rupees?
  29. 29.10% of ₹590 =
  30. 30.94 × 3 =
  31. 31.70 + 23 =
  32. 32.210 ÷ 6 =
  33. 33.26² =
  34. 34.27 + 8 =
  35. 35.788 + 99 =
  36. 36.100 ÷ 4 =
  37. 37.27 laddoos are packed in boxes of 6. How many laddoos are left over?
  38. 38.52 − 40 =
  39. 39.25 + 81 =
  40. 40.6 + 5 =

Answer key

  1. 21
  2. 38
  3. 18
  4. 41
  5. 90
  6. 63
  7. 178
  8. 2400
  9. 6
  10. 29
  11. 4500
  12. 576
  13. 71
  14. 168
  15. 17
  16. 108
  17. 9
  18. 900
  19. 68
  20. 97
  21. 35
  22. 34
  23. 900
  24. 43
  25. 441
  26. 39
  27. 25
  28. 15
  29. 59
  30. 282
  31. 93
  32. 35
  33. 676
  34. 35
  35. 887
  36. 25
  37. 3
  38. 12
  39. 106
  40. 11

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