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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 102 · 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.Half of 116 =
  2. 2.13² =
  3. 3.Best estimate of 860 + 556? (a) 1300 (b) 1700 (c) 1500
  4. 4.Best estimate of 71 × 56? (a) 42000 (b) 420 (c) 4200
  5. 5.160 ÷ 8 =
  6. 6.63 + 76 =
  7. 7.22 + 21 =
  8. 8.128 ÷ 4 =
  9. 9.34 + ? = 100
  10. 10.28 + 29 =
  11. 11.87 + 8 =
  12. 12.Half of 68 =
  13. 13.304 − 289 =
  14. 14.103 children stand in rows of 7. How many full rows can they make?
  15. 15.25 × 7 =
  16. 16.What is the remainder when 120 is divided by 9?
  17. 17.68 + ? = 100
  18. 18.Double 74 =
  19. 19.35 + 7 =
  20. 20.29 + 5 =
  21. 21.37 + 6 =
  22. 22.62 × 4 =
  23. 23.25% of ₹630 =
  24. 24.You buy a bag of mangoes for ₹235 and pay with a ₹500 note. How much change do you get, in rupees?
  25. 25.A train leaves at 3:10 and reaches the next city at 4:20. How many minutes is the journey?
  26. 26.78 + 53 =
  27. 27.33 − 29 =
  28. 28.16 × 8 =
  29. 29.256 ÷ 8 =
  30. 30.79 + 2 =
  31. 31.What is the remainder when 69 is divided by 8?
  32. 32.57 + 9 =
  33. 33.40 + ? = 100
  34. 34.A train leaves at 2:45 and reaches the next city at 5:50. How many minutes is the journey?
  35. 35.25 + 6 =
  36. 36.22² =
  37. 37.306 ÷ 6 =
  38. 38.314 − 287 =
  39. 39.35 + 8 =
  40. 40.40 × 4 =

Answer key

  1. 58
  2. 169
  3. 1500
  4. 4200
  5. 20
  6. 139
  7. 43
  8. 32
  9. 66
  10. 57
  11. 95
  12. 34
  13. 15
  14. 14
  15. 175
  16. 3
  17. 32
  18. 148
  19. 42
  20. 34
  21. 43
  22. 248
  23. 157.5
  24. 265
  25. 70
  26. 131
  27. 4
  28. 128
  29. 32
  30. 81
  31. 5
  32. 66
  33. 60
  34. 185
  35. 31
  36. 484
  37. 51
  38. 27
  39. 43
  40. 160

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