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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 454 · 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.Double 42 =
  2. 2.38 + 3 =
  3. 3.What is the remainder when 120 is divided by 9?
  4. 4.Best estimate of 828 + 282? (a) 1100 (b) 1300 (c) 900
  5. 5.79 − 21 =
  6. 6.96 − 31 =
  7. 7.35 + 8 =
  8. 8.Double 78 =
  9. 9.16 + 6 =
  10. 10.216 − 196 =
  11. 11.You buy a box of crayons for ₹36 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
  12. 12.147 ÷ 7 =
  13. 13.37 × 4 =
  14. 14.25% of ₹210 =
  15. 15.5% of ₹710 =
  16. 16.63 − 19 =
  17. 17.53 × 6 =
  18. 18.Half of 134 =
  19. 19.Double 31 =
  20. 20.43 + 19 =
  21. 21.13 + 14 =
  22. 22.23 + 27 =
  23. 23.502 − 485 =
  24. 24.Best estimate of 71 × 56? (a) 420 (b) 42000 (c) 4200
  25. 25.15 + 16 =
  26. 26.56 + 6 =
  27. 27.172 ÷ 4 =
  28. 28.33 + 56 =
  29. 29.27 laddoos are packed in boxes of 6. How many laddoos are left over?
  30. 30.You buy a bag of mangoes for ₹425 and pay with a ₹500 note. How much change do you get, in rupees?
  31. 31.2 + ? = 10
  32. 32.A train leaves at 5:55 and reaches the next city at 7:30. How many minutes is the journey?
  33. 33.49 + ? = 100
  34. 34.87 + 4 =
  35. 35.7 + 9 =
  36. 36.6 + 7 =
  37. 37.32 × 8 =
  38. 38.You buy a notebook for ₹30 and a pen for ₹27. You pay with a ₹100 note. How much change do you get, in rupees?
  39. 39.17 + 8 =
  40. 40.43 + 46 =

Answer key

  1. 84
  2. 41
  3. 3
  4. 1100
  5. 58
  6. 65
  7. 43
  8. 156
  9. 22
  10. 20
  11. 41
  12. 21
  13. 148
  14. 52.5
  15. 35.5
  16. 44
  17. 318
  18. 67
  19. 62
  20. 62
  21. 27
  22. 50
  23. 17
  24. 4200
  25. 31
  26. 62
  27. 43
  28. 89
  29. 3
  30. 75
  31. 8
  32. 95
  33. 51
  34. 91
  35. 16
  36. 13
  37. 256
  38. 43
  39. 25
  40. 89

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