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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 617 · 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. 1.249 ÷ 3 =
  2. 2.Best estimate of 745 + 642? (a) 1300 (b) 1100 (c) 1500
  3. 3.70 − 16 =
  4. 4.What is the remainder when 26 is divided by 6?
  5. 5.36 + ? = 100
  6. 6.112 ÷ 8 =
  7. 7.71 + 34 =
  8. 8.You start your homework at 1:25 and finish at 4:25. How many minutes did you work?
  9. 9.88 − 13 =
  10. 10.16 children stand in rows of 3. How many full rows can they make?
  11. 11.13 + 15 =
  12. 12.23 laddoos are packed in boxes of 3. How many laddoos are left over?
  13. 13.7 + 7 =
  14. 14.Half of 26 =
  15. 15.612 ÷ 9 =
  16. 16.63 + 47 =
  17. 17.59 − 29 =
  18. 18.60 + 86 =
  19. 19.123 − 94 =
  20. 20.You buy a pencil box for ₹31 and a pen for ₹43. You pay with a ₹100 note. How much change do you get, in rupees?
  21. 21.79 + 9 =
  22. 22.29 − 9 =
  23. 23.67 + 49 =
  24. 24.24² =
  25. 25.76 + ? = 100
  26. 26.573 + 99 =
  27. 27.340 ÷ 4 =
  28. 28.Best estimate of 34 × 16? (a) 6000 (b) 60 (c) 600
  29. 29.11² =
  30. 30.19 + 20 =
  31. 31.68 + 83 =
  32. 32.12 × 4 =
  33. 33.Double 98 =
  34. 34.29² =
  35. 35.8 + ? = 10
  36. 36.15 + 7 =
  37. 37.84 ÷ 4 =
  38. 38.68 + 3 =
  39. 39.140 ÷ 4 =
  40. 40.56 ÷ 4 =

Answer key

  1. 83
  2. 1300
  3. 54
  4. 2
  5. 64
  6. 14
  7. 105
  8. 180
  9. 75
  10. 5
  11. 28
  12. 2
  13. 14
  14. 13
  15. 68
  16. 110
  17. 30
  18. 146
  19. 29
  20. 26
  21. 88
  22. 20
  23. 116
  24. 576
  25. 24
  26. 672
  27. 85
  28. 600
  29. 121
  30. 39
  31. 151
  32. 48
  33. 196
  34. 841
  35. 2
  36. 22
  37. 21
  38. 71
  39. 35
  40. 14

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