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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 222 · 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. 1.1014 − 987 =
  2. 2.69 + 8 =
  3. 3.58 + 83 =
  4. 4.75 − 51 =
  5. 5.56 × 3 =
  6. 6.10% of ₹260 =
  7. 7.29 + 4 =
  8. 8.21 + 23 =
  9. 9.21 × 8 =
  10. 10.14² =
  11. 11.5% of ₹460 =
  12. 12.5% of ₹410 =
  13. 13.48 + 6 =
  14. 14.1 + ? = 10
  15. 15.Half of 144 =
  16. 16.28 × 8 =
  17. 17.5 + ? = 10
  18. 18.Best estimate of 417 + 528? (a) 1100 (b) 700 (c) 900
  19. 19.47 + 8 =
  20. 20.61 × 9 =
  21. 21.53 + ? = 100
  22. 22.You buy a box of crayons for ₹41 and a pen for ₹40. You pay with a ₹100 note. How much change do you get, in rupees?
  23. 23.395 ÷ 5 =
  24. 24.288 ÷ 8 =
  25. 25.209 − 183 =
  26. 26.77 − 26 =
  27. 27.498 − 99 =
  28. 28.Double 58 =
  29. 29.184 ÷ 8 =
  30. 30.724 + 99 =
  31. 31.164 ÷ 4 =
  32. 32.A cricket match starts at 1:10 and the first innings ends at 3:45. How many minutes did the innings last?
  33. 33.62 × 8 =
  34. 34.204 ÷ 4 =
  35. 35.10% of ₹830 =
  36. 36.8 + ? = 10
  37. 37.175 ÷ 7 =
  38. 38.388 ÷ 4 =
  39. 39.41 + 51 =
  40. 40.5% of ₹750 =

Answer key

  1. 27
  2. 77
  3. 141
  4. 24
  5. 168
  6. 26
  7. 33
  8. 44
  9. 168
  10. 196
  11. 23
  12. 20.5
  13. 54
  14. 9
  15. 72
  16. 224
  17. 5
  18. 900
  19. 55
  20. 549
  21. 47
  22. 19
  23. 79
  24. 36
  25. 26
  26. 51
  27. 399
  28. 116
  29. 23
  30. 823
  31. 41
  32. 155
  33. 496
  34. 51
  35. 83
  36. 2
  37. 25
  38. 97
  39. 92
  40. 37.5

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