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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 891 · 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. 1.37 + 14 =
  2. 2.1 + ? = 10
  3. 3.24 + ? = 100
  4. 4.Best estimate of 426 + 841? (a) 1000 (b) 1200 (c) 1400
  5. 5.A cricket match starts at 6:15 and the first innings ends at 9:35. How many minutes did the innings last?
  6. 6.236 ÷ 4 =
  7. 7.27² =
  8. 8.25% of ₹340 =
  9. 9.What is the remainder when 26 is divided by 5?
  10. 10.You start your homework at 2:55 and finish at 4:05. How many minutes did you work?
  11. 11.17 + 9 =
  12. 12.37 + 89 =
  13. 13.98 × 6 =
  14. 14.6 + ? = 10
  15. 15.Double 47 =
  16. 16.4 + ? = 10
  17. 17.124 ÷ 4 =
  18. 18.10% of ₹230 =
  19. 19.13 + 12 =
  20. 20.73 + 73 =
  21. 21.Best estimate of 18 × 48? (a) 1000 (b) 10000 (c) 100
  22. 22.22 + 32 =
  23. 23.10% of ₹50 =
  24. 24.69 − 17 =
  25. 25.50% of ₹640 =
  26. 26.25 + 26 =
  27. 27.81 × 9 =
  28. 28.84 − 26 =
  29. 29.58 − 23 =
  30. 30.234 ÷ 9 =
  31. 31.67 × 4 =
  32. 32.52 − 14 =
  33. 33.Best estimate of 23 × 21? (a) 400 (b) 4000 (c) 40
  34. 34.Best estimate of 849 + 275? (a) 1100 (b) 1300 (c) 900
  35. 35.25% of ₹470 =
  36. 36.26 × 8 =
  37. 37.202 − 198 =
  38. 38.68 × 4 =
  39. 39.13² =
  40. 40.27 + 4 =

Answer key

  1. 51
  2. 9
  3. 76
  4. 1200
  5. 200
  6. 59
  7. 729
  8. 85
  9. 1
  10. 70
  11. 26
  12. 126
  13. 588
  14. 4
  15. 94
  16. 6
  17. 31
  18. 23
  19. 25
  20. 146
  21. 1000
  22. 54
  23. 5
  24. 52
  25. 320
  26. 51
  27. 729
  28. 58
  29. 35
  30. 26
  31. 268
  32. 38
  33. 400
  34. 1100
  35. 117.5
  36. 208
  37. 4
  38. 272
  39. 169
  40. 31

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