← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 323 · 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. 1.53 × 7 =
  2. 2.54 − 18 =
  3. 3.72 × 4 =
  4. 4.Best estimate of 88 × 49? (a) 450 (b) 4500 (c) 45000
  5. 5.410 + 99 =
  6. 6.38 × 3 =
  7. 7.38 − 9 =
  8. 8.1 + ? = 10
  9. 9.Best estimate of 136 + 143? (a) 400 (b) 0 (c) 200
  10. 10.584 ÷ 8 =
  11. 11.175 + 99 =
  12. 12.220 ÷ 4 =
  13. 13.Double 69 =
  14. 14.A cricket match starts at 8:20 and the first innings ends at 9:00. How many minutes did the innings last?
  15. 15.11² =
  16. 16.88 − 42 =
  17. 17.Double 29 =
  18. 18.49 + 15 =
  19. 19.22 + 21 =
  20. 20.19 + 18 =
  21. 21.60 − 38 =
  22. 22.68 − 33 =
  23. 23.89 − 59 =
  24. 24.Half of 126 =
  25. 25.126 + 99 =
  26. 26.Double 65 =
  27. 27.9 + 5 =
  28. 28.25% of ₹460 =
  29. 29.40 − 29 =
  30. 30.What is the remainder when 83 is divided by 6?
  31. 31.3 + ? = 10
  32. 32.48 ÷ 4 =
  33. 33.Half of 76 =
  34. 34.You buy a storybook for ₹31 and a pen for ₹44. You pay with a ₹100 note. How much change do you get, in rupees?
  35. 35.34 + 29 =
  36. 36.Double 78 =
  37. 37.28² =
  38. 38.You buy a cricket ball for ₹216 and pay with a ₹500 note. How much change do you get, in rupees?
  39. 39.56 + 9 =
  40. 40.5% of ₹770 =

Answer key

  1. 371
  2. 36
  3. 288
  4. 4500
  5. 509
  6. 114
  7. 29
  8. 9
  9. 200
  10. 73
  11. 274
  12. 55
  13. 138
  14. 40
  15. 121
  16. 46
  17. 58
  18. 64
  19. 43
  20. 37
  21. 22
  22. 35
  23. 30
  24. 63
  25. 225
  26. 130
  27. 14
  28. 115
  29. 11
  30. 5
  31. 7
  32. 12
  33. 38
  34. 25
  35. 63
  36. 156
  37. 784
  38. 284
  39. 65
  40. 38.5

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths